forked from PaulStoffregen/Audio
/
index.html
3450 lines (3339 loc) · 152 KB
/
index.html
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<!DOCTYPE html>
<!-- vim: set ts=4: -->
<html>
<meta charset="utf-8">
<meta name="viewport" content="width=device-width, initial-scale=1, maximum-scale=1, user-scalable=0"/>
<meta name="apple-mobile-web-app-capable" content="yes">
<meta name="mobile-web-app-capable" content="yes">
<!--
Modified from original Node-Red source, for audio system visualization
Copyright 2013 IBM Corp.
Licensed under the Apache License, Version 2.0 (the "License");
you may not use this file except in compliance with the License.
You may obtain a copy of the License at
http://www.apache.org/licenses/LICENSE-2.0
Unless required by applicable law or agreed to in writing, software
distributed under the License is distributed on an "AS IS" BASIS,
WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
See the License for the specific language governing permissions and
limitations under the License.
-->
<head>
<title>Audio System Design Tool for Teensy Audio Library</title>
<link href="bootstrap/css/bootstrap.min.css" rel="stylesheet" media="screen">
<link href="jquery/css/smoothness/jquery-ui-1.10.3.custom.min.css" rel="stylesheet" media="screen">
<link rel="stylesheet" type="text/css" href="orion/built-editor.css"/>
<link rel="stylesheet" type="text/css" href="font-awesome/css/font-awesome.min.css"/>
<link rel="stylesheet" href="style.css">
<style>
table.doc {border-spacing:3px; border-collapse:separate; font-size: 80%}
tr.top {background-color:#C0C0C0}
tr.odd {background-color:#F0F0F0}
tr.even {background-color:#E0E0E0}
p.func {padding-bottom:0; margin:0px}
p.desc {padding-left:2em; margin:0px; padding-top:0.2em; padding-bottom:0.8em; font-size:0.75em}
p.exam {padding-left:2em; text-indent:-1.2em; margin:0px; padding-top:0; padding-bottom:0.5em; font-size:0.75em; font-weight:bold}
pre.desc {padding-left:3em; margin:0px; padding-top:0em; padding-bottom:0.8em; font-size:0.75em;
background-color:#FFFFFF; border:0px; line-height:100%;
}
span.indent {padding-left:2em}
span.literal {color: #006699}
span.comment {color: #777755}
span.keyword {color: #cc6600}
span.function {color: #996600}
span.mainfunction {color: #993300; font-weight: bolder}
</style>
</head>
<body spellcheck="false">
<div class="navbar navbar-inverse navbar-fixed-top">
<div class="navbar-inner">
<div class="container-fluid">
<span class="brand">Audio System Design Tool for <a href="http://www.pjrc.com/teensy/td_libs_Audio.html" target="_blank">Teensy Audio Library</a></span>
<div class="btn-group pull-right">
<a class="btn dropdown-toggle" data-toggle="dropdown" href="#"><i class="icon-align-justify"></i> <span class="caret"></span></a>
<ul class="dropdown-menu">
<li><a id="btn-sidebar" tabindex="-1" href="#"><i class="icon-ok pull-right"></i><i class="icon-list-alt"></i> Sidebar</a></li>
<li class="divider"></li>
<!-- <li><a id="btn-node-status" tabindex="-1" href="#"><i class="icon-ok pull-right"></i><i class="icon-info-sign"></i> Node Status</a></li>
<li class="divider"></li>
-->
<!--
<li class="dropdown-submenu pull-left"><a tabindex="-1" href="#"><i class="icon-edit"></i> Import from...</a>
<ul class="dropdown-menu">
<li><a id="btn-import" tabindex="-1" href="#"><i class="icon-edit"></i> Clipboard...</a></li>
<li id="flow-menu-parent" class="dropdown-submenu pull-left">
<a tabindex="-1" href="#"><i class="icon-book"></i> Library</a>
<ul class="dropdown-menu"></ul>
</li>
</ul>
</li>
<li id="li-menu-export" class="dropdown-submenu disabled pull-left"><a tabindex="-1" href="#"><i class="icon-share"></i> Export to...</a>
<ul class="dropdown-menu">
<li id="li-menu-export-clipboard" class="disabled"><a id="btn-export-clipboard" tabindex="-1" href="#"><i class="icon-share"></i> Clipboard...</a></li>
<li id="li-menu-export-library" class="disabled"><a id="btn-export-library" tabindex="-1" href="#"><i class="icon-book"></i> Library...</a></li>
</ul>
</li>
<li class="divider"></li>
-->
<!--
<li><a id="btn-config-nodes" tabindex="-1" href="#"><i class="icon-th-list"></i> Configuration nodes...</a></li>
<li class="divider"></li>
-->
<!--
<li class="dropdown-submenu pull-left"><a tabindex="-1" href="#"><i class="icon-th-large"></i> Workspaces</a>
<ul id="workspace-menu-list" class="dropdown-menu">
<li><a id="btn-workspace-add" tabindex="-1" href="#"><i class="icon-plus"></i> Add</a></li>
<li><a id="btn-workspace-edit" tabindex="-1" href="#"><i class="icon-edit"></i> Rename</a></li>
<li><a id="btn-workspace-delete" tabindex="-1" href="#"><i class="icon-minus"></i> Delete</a></li>
<li class="divider"></li>
</ul>
</li>
<li class="divider"></li>-->
<li><a id="btn-keyboard-shortcuts" tabindex="-1" href="#"><i class="icon-question-sign"></i> Keyboard Shortcuts</a></li>
<li><a id="btn-help" tabindex="-1" href="http://node-red.github.io/docs" target="_blank"><i class="icon-question-sign"></i> Help...</a></li>
</ul>
</div>
<div class="btn-group pull-left">
<a id="btn-deploy" class="btn action-deploy disabled" href="#"><i id="btn-icn-deploy" class="icon-upload"></i>Export</a>
<a id="btn-import" class="btn action-import disabled" href="#"><i id="btn-icn-download" class="icon-download"></i>Import</a>
</div>
</div>
</div>
</div>
<div id="main-container" class="sidebar-closed">
<div id="palette">
<img src="img/spin.svg" class="palette-spinner"/>
<div id="palette-container" class="palette-scroll">
</div>
<div id="palette-search">
<i class="icon-search"></i><input id="palette-search-input" type="text" placeholder="filter"><a href="#" id="palette-search-clear"><i class="icon-remove"></i></a></input>
</div>
</div><!-- /palette -->
<div id="workspace">
<ul id="workspace-tabs"></ul>
<!--<div id="workspace-add-tab"><a id="btn-workspace-add-tab" href="#"><i class="icon-plus"></i></a></div>-->
<div id="chart"></div>
<div id="workspace-toolbar">
<div class="btn-group">
<a class="btn btn-small" href="#"><i class="icon-zoom-out"></i></a>
<a class="btn btn-small" href="#"><i class="icon-th"></i></a>
<a class="btn btn-small" href="#"><i class="icon-zoom-in"></i></a>
</div>
</div>
</div>
<div id="chart-zoom-controls">
<div class="btn-group">
<a class="btn btn-mini" id="btn-zoom-out" href="#"><i class="icon-zoom-out"></i></a>
<a class="btn btn-mini" id="btn-zoom-zero" href="#"><i class="icon-th"></i></a>
<a class="btn btn-mini" id="btn-zoom-in" href="#"><i class="icon-zoom-in"></i></a>
</div>
</div>
<div id="sidebar">
<ul id="sidebar-tabs"></ul>
<div id="sidebar-content"></div>
</div>
<div id="sidebar-separator"></div>
</div>
<div id="notifications"></div>
<div id="dropTarget"><div>Drop the flow here</div></div>
<div id="dialog" class="hide"><form id="dialog-form" class="form-horizontal"></form></div>
<div id="node-config-dialog" class="hide"><form id="dialog-config-form" class="form-horizontal"></form><div class="form-tips" id="node-config-dialog-user-count"></div></div>
<div id="node-dialog-confirm-deploy" class="hide">
<form class="form-horizontal">
<div id="node-dialog-confirm-deploy-config" style="text-align: center; padding-top: 30px;">
Some of the nodes are not properly configured. Are you sure you want to deploy?
</div>
<div id="node-dialog-confirm-deploy-unknown" style="text-align: center; padding-top: 10px;">
The workspace contains some unknown node types:
<ul style="width: 300px; margin: auto; text-align: left;" id="node-dialog-confirm-deploy-unknown-list"></ul>
Are you sure you want to deploy?
</div>
</form>
</div>
<div id="node-dialog-error-deploy" class="hide">
<form class="form-horizontal">
<div id="node-dialog-error-deploy-noio" style="text-align: center; padding-top: 10px;">
<p>The workspace contains no input/output nodes!</p>
<p>You need an input or an output to export the data!</p>
<p>Without such a input/output function the exported
code will not run properly!</p>
</div>
</form>
</div>
<div id="node-help" class="modal hide fade" tabindex="-1" role="dialog" aria-labelledby="node-help-label" aria-hidden="true">
<div class="modal-header">
<h5 id="node-help-label">Keyboard Shortcuts <span style="float: right;"><a href="http://node-red.github.io/docs" target="_blank">Open help in new window »</a></span></h5>
</div>
<div class="modal-body">
<table>
<tr>
<td><span class="help-key">?</span></td><td>Help</td>
<td><span class="help-key">Ctrl</span> <span class="help-key">a</span></td><td>Select all nodes</td>
</tr>
<tr>
<td><span class="help-key">Ctrl</span> <span class="help-key">Space</span></td><td>Toggle sidebar</td>
<td><span class="help-key">Shift</span> <span class="help-key">Click</span></td><td>Select all connected nodes</td>
</tr>
<tr>
<td><span class="help-key">Ctrl</span> <span class="help-key">z</span></td><td>Undo</td>
<td><span class="help-key">Ctrl</span> <span class="help-key">Click</span></td><td>Add/remove node from selection</td>
</tr>
<tr>
<td></td><td></td>
<td><span class="help-key">Delete</span></td><td>Delete selected nodes or link</td>
</tr>
<tr>
<td><span class="help-key">Ctrl</span> <span class="help-key">x</span></td><td>Cut selected nodes</td>
<td></td><td></td>
</tr>
<tr>
<td><span class="help-key">Ctrl</span> <span class="help-key">c</span></td><td>Copy selected nodes</td>
<td><span class="help-key">Ctrl</span> <span class="help-key">v</span></td><td>Paste nodes</td>
</tr>
<tr>
<td><span class="help-key">Ctrl</span> <span class="help-key">i</span></td><td>Import nodes</td>
<td><span class="help-key">Ctrl</span> <span class="help-key">e</span></td><td>Export selected nodes</td>
</tr>
<tr>
<td colspan="2"></td>
</tr>
<tr>
<td><span class="help-key">Ctrl</span> <span class="help-key">+</span></td><td>Zoom in</td>
<td><span class="help-key">Ctrl</span> <span class="help-key">-</span></td><td>Zoom out</td>
</tr>
</table>
</div>
<div class="modal-footer">
<button class="btn" data-dismiss="modal" aria-hidden="true">Close</button>
</div>
</div>
<div id="node-dialog-library-save-confirm" class="hide">
<form class="form-horizontal">
<div style="text-align: center; padding-top: 30px;">
A <span id="node-dialog-library-save-type"></span> called <span id="node-dialog-library-save-name"></span> already exists. Overwrite?
</div>
</form>
</div>
<div id="node-dialog-library-save" class="hide">
<form class="form-horizontal">
<div class="form-row">
<label for="node-dialog-library-save-folder"><i class="icon-folder-open"></i> Folder</label>
<input type="text" id="node-dialog-library-save-folder" placeholder="Folder">
</div>
<div class="form-row">
<label for="node-dialog-library-save-filename"><i class="icon-file"></i> Filename</label>
<input type="text" id="node-dialog-library-save-filename" placeholder="Filename">
</div>
</form>
</div>
<div id="node-dialog-library-lookup" class="hide">
<form class="form-horizontal">
<div class="form-row">
<ul id="node-dialog-library-breadcrumbs" class="breadcrumb">
<li class="active"><a href="#">Library</a></li>
</ul>
</div>
<div class="form-row">
<div style="vertical-align: top; display: inline-block; height: 100%; width: 30%; padding-right: 20px;">
<div id="node-select-library" style="border: 1px solid #999; width: 100%; height: 100%; overflow:scroll;"><ul></ul></div>
</div>
<div style="vertical-align: top; display: inline-block;width: 65%; height: 100%;">
<div style="height: 100%; width: 95%;" class="node-text-editor" id="node-select-library-text" ></div>
</div>
</div>
</form>
</div>
<div id="node-dialog-rename-workspace" class="hide">
<form class="form-horizontal">
<div class="form-row">
<label for="node-input-workspace-name" ><i class="icon-tag"></i> Name:</label>
<input type="text" id="node-input-workspace-name">
</div>
</form>
</div>
<div id="node-dialog-delete-workspace" class="hide">
<form class="form-horizontal">
<div style="text-align: center; padding-top: 30px;">
Are you sure you want to delete '<span id="node-dialog-delete-workspace-name"></span>'?
</div>
</form>
</div>
<script type="text/x-red" data-template-name="export-clipboard-dialog">
<div class="form-row">
<label for="node-input-export" style="display: block; width:100%;"><i class="icon-share"></i> Source Code:</label>
<textarea readonly style="font-family: monospace; font-size: 12px; background:rgb(226, 229, 255); padding-left: 0.5em;" class="input-block-level" id="node-input-export" rows="12"></textarea>
</div>
<div class="form-tips">
Select the text above and copy to the clipboard with Ctrl-A Ctrl-C.
</div>
</script>
<script type="text/x-red" data-template-name="export-library-dialog">
<div class="form-row">
<label for="node-input-filename" ><i class="icon-tag"></i> Filename:</label>
<input type="text" id="node-input-filename" placeholder="Filename">
</div>
</script>
<script type="text/x-red" data-template-name="import-dialog">
<div class="form-row">
<label for="node-input-import"><i class="icon-share"></i>Nodes:</label>
<textarea style="font-family: monospace; font-size: 12px; background:rgb(226, 229, 255); padding-left: 0.5em;" class="input-block-level" id="node-input-import" rows="5" placeholder="Paste nodes here, or lookup in the library. When importing Arduino code, the whole flow will be replaced."></textarea>
</div>
<div class="form-tips">
<label for="node-input-arduino" style="font-size: 13px; padding: 2px 0px 0px 4px;">
<input style="margin-bottom: 4px; margin-right: 4px;" type="checkbox" id="node-input-arduino" checked="checked" class="input-block-level" />
Import copied code from the Arduino IDE
</label>
</div>
</script>
<script src="jquery/js/jquery-1.9.1.js"></script>
<script src="bootstrap/js/bootstrap.min.js"></script>
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<!--
TODO: generate some or all of this automatically from the C++ source
-->
<!--
TODO: add a field for maximum instance count
-->
<!--
TODO: add a field for exclusive to other objects (not allowed if they're used)
-->
<!--
TODO: add "parameters" fields, to replace the form html stuff
-->
<script type="text/x-red" data-container-name="NodeDefinitions">
{"nodes":[
{"type":"AudioInputI2S","data":{"defaults":{"name":{"value":"new"}},"shortName":"i2s","inputs":0,"outputs":2,"category":"input-function","color":"#E6E0F8","icon":"arrow-in.png"}},
{"type":"AudioInputI2SQuad","data":{"defaults":{"name":{"value":"new"}},"shortName":"i2s_quad","inputs":0,"outputs":4,"category":"input-function","color":"#E6E0F8","icon":"arrow-in.png"}},
{"type":"AudioInputAnalog","data":{"defaults":{"name":{"value":"new"}},"shortName":"adc","inputs":0,"outputs":1,"category":"input-function","color":"#E6E0F8","icon":"arrow-in.png"}},
{"type":"AudioInputI2Sslave","data":{"defaults":{"name":{"value":"new"}},"shortName":"i2sslave","inputs":0,"outputs":2,"category":"input-function","color":"#E6E0F8","icon":"arrow-in.png"}},
{"type":"AudioInputUSB","data":{"defaults":{"name":{"value":"new"}},"shortName":"usb","inputs":0,"outputs":2,"category":"input-function","color":"#E6E0F8","icon":"arrow-in.png"}},
{"type":"AudioOutputI2S","data":{"defaults":{"name":{"value":"new"}},"shortName":"i2s","inputs":2,"outputs":0,"category":"output-function","color":"#E6E0F8","icon":"arrow-in.png"}},
{"type":"AudioOutputI2SQuad","data":{"defaults":{"name":{"value":"new"}},"shortName":"i2s_quad","inputs":4,"outputs":0,"category":"output-function","color":"#E6E0F8","icon":"arrow-in.png"}},
{"type":"AudioOutputSPDIF","data":{"defaults":{"name":{"value":"new"}},"shortName":"spdif","inputs":2,"outputs":0,"category":"output-function","color":"#E6E0F8","icon":"arrow-in.png"}},
{"type":"AudioOutputAnalog","data":{"defaults":{"name":{"value":"new"}},"shortName":"dac","inputs":1,"outputs":0,"category":"output-function","color":"#E6E0F8","icon":"arrow-in.png"}},
{"type":"AudioOutputPWM","data":{"defaults":{"name":{"value":"new"}},"shortName":"pwm","inputs":1,"outputs":0,"category":"output-function","color":"#E6E0F8","icon":"arrow-in.png"}},
{"type":"AudioOutputI2Sslave","data":{"defaults":{"name":{"value":"new"}},"shortName":"i2sslave","inputs":2,"outputs":0,"category":"output-function","color":"#E6E0F8","icon":"arrow-in.png"}},
{"type":"AudioOutputUSB","data":{"defaults":{"name":{"value":"new"}},"shortName":"usb","inputs":2,"outputs":0,"category":"output-function","color":"#E6E0F8","icon":"arrow-in.png"}},
{"type":"AudioMixer4","data":{"defaults":{"name":{"value":"new"}},"shortName":"mixer","inputs":4,"outputs":1,"category":"mixer-function","color":"#E6E0F8","icon":"arrow-in.png"}},
{"type":"AudioPlayMemory","data":{"defaults":{"name":{"value":"new"}},"shortName":"playMem","inputs":0,"outputs":1,"category":"play-function","color":"#E6E0F8","icon":"arrow-in.png"}},
{"type":"AudioPlaySdWav","data":{"defaults":{"name":{"value":"new"}},"shortName":"playSdWav","inputs":0,"outputs":2,"category":"play-function","color":"#E6E0F8","icon":"arrow-in.png"}},
{"type":"AudioPlaySdRaw","data":{"defaults":{"name":{"value":"new"}},"shortName":"playSdRaw","inputs":0,"outputs":1,"category":"play-function","color":"#E6E0F8","icon":"arrow-in.png"}},
{"type":"AudioPlaySerialflashRaw","data":{"defaults":{"name":{"value":"new"}},"shortName":"playFlashRaw","inputs":0,"outputs":1,"category":"play-function","color":"#E6E0F8","icon":"arrow-in.png"}},
{"type":"AudioPlayQueue","data":{"defaults":{"name":{"value":"new"}},"shortName":"queue","inputs":0,"outputs":1,"category":"play-function","color":"#E6E0F8","icon":"arrow-in.png"}},
{"type":"AudioRecordQueue","data":{"defaults":{"name":{"value":"new"}},"shortName":"queue","inputs":1,"outputs":0,"category":"record-function","color":"#E6E0F8","icon":"arrow-in.png"}},
{"type":"AudioSynthSimpleDrum","data":{"defaults":{"name":{"value":"new"}},"shortName":"drum","inputs":0,"outputs":1,"category":"synth-function","color":"#E6E0F8","icon":"arrow-in.png"}},
{"type":"AudioSynthKarplusStrong","data":{"defaults":{"name":{"value":"new"}},"shortName":"string","inputs":0,"outputs":1,"category":"synth-function","color":"#E6E0F8","icon":"arrow-in.png"}},
{"type":"AudioSynthWaveformSine","data":{"defaults":{"name":{"value":"new"}},"shortName":"sine","inputs":0,"outputs":1,"category":"synth-function","color":"#E6E0F8","icon":"arrow-in.png"}},
{"type":"AudioSynthWaveformSineHires","data":{"defaults":{"name":{"value":"new"}},"shortName":"sine_hires","inputs":0,"outputs":2,"category":"synth-function","color":"#E6E0F8","icon":"arrow-in.png"}},
{"type":"AudioSynthWaveformSineModulated","data":{"defaults":{"name":{"value":"new"}},"shortName":"sine_fm","inputs":1,"outputs":1,"category":"synth-function","color":"#E6E0F8","icon":"arrow-in.png"}},
{"type":"AudioSynthWaveform","data":{"defaults":{"name":{"value":"new"}},"shortName":"waveform","inputs":0,"outputs":1,"category":"synth-function","color":"#E6E0F8","icon":"arrow-in.png"}},
{"type":"AudioSynthToneSweep","data":{"defaults":{"name":{"value":"new"}},"shortName":"tonesweep","inputs":0,"outputs":1,"category":"synth-function","color":"#E6E0F8","icon":"arrow-in.png"}},
{"type":"AudioSynthWaveformDc","data":{"defaults":{"name":{"value":"new"}},"shortName":"dc","inputs":0,"outputs":1,"category":"synth-function","color":"#E6E0F8","icon":"arrow-in.png"}},
{"type":"AudioSynthNoiseWhite","data":{"defaults":{"name":{"value":"new"}},"shortName":"noise","inputs":0,"outputs":1,"category":"synth-function","color":"#E6E0F8","icon":"arrow-in.png"}},
{"type":"AudioSynthNoisePink","data":{"defaults":{"name":{"value":"new"}},"shortName":"pink","inputs":0,"outputs":1,"category":"synth-function","color":"#E6E0F8","icon":"arrow-in.png"}},
{"type":"AudioEffectFade","data":{"defaults":{"name":{"value":"new"}},"shortName":"fade","inputs":1,"outputs":1,"category":"effect-function","color":"#E6E0F8","icon":"arrow-in.png"}},
{"type":"AudioEffectChorus","data":{"defaults":{"name":{"value":"new"}},"shortName":"chorus","inputs":1,"outputs":1,"category":"effect-function","color":"#E6E0F8","icon":"arrow-in.png"}},
{"type":"AudioEffectFlange","data":{"defaults":{"name":{"value":"new"}},"shortName":"flange","inputs":1,"outputs":1,"category":"effect-function","color":"#E6E0F8","icon":"arrow-in.png"}},
{"type":"AudioEffectEnvelope","data":{"defaults":{"name":{"value":"new"}},"shortName":"envelope","inputs":1,"outputs":1,"category":"effect-function","color":"#E6E0F8","icon":"arrow-in.png"}},
{"type":"AudioEffectMultiply","data":{"defaults":{"name":{"value":"new"}},"shortName":"multiply","inputs":2,"outputs":1,"category":"effect-function","color":"#E6E0F8","icon":"arrow-in.png"}},
{"type":"AudioEffectDelay","data":{"defaults":{"name":{"value":"new"}},"shortName":"delay","inputs":1,"outputs":8,"category":"effect-function","color":"#E6E0F8","icon":"arrow-in.png"}},
{"type":"AudioEffectDelayExternal","data":{"defaults":{"name":{"value":"new"}},"shortName":"delayExt","inputs":1,"outputs":8,"category":"effect-function","color":"#E6E0F8","icon":"arrow-in.png"}},
{"type":"AudioEffectBitcrusher","data":{"shortName":"bitcrusher","inputs":1,"outputs":1,"category":"effect-function","color":"#E6E0F8","icon":"arrow-in.png"}},
{"type":"AudioEffectMidSide","data":{"shortName":"midside","inputs":2,"outputs":2,"category":"effect-function","color":"#E6E0F8","icon":"arrow-in.png"}},
{"type":"AudioFilterBiquad","data":{"defaults":{"name":{"value":"new"}},"shortName":"biquad","inputs":1,"outputs":1,"category":"filter-function","color":"#E6E0F8","icon":"arrow-in.png"}},
{"type":"AudioFilterFIR","data":{"defaults":{"name":{"value":"new"}},"shortName":"fir","inputs":1,"outputs":1,"category":"filter-function","color":"#E6E0F8","icon":"arrow-in.png"}},
{"type":"AudioFilterStateVariable","data":{"defaults":{"name":{"value":"new"}},"shortName":"filter","inputs":2,"outputs":3,"category":"filter-function","color":"#E6E0F8","icon":"arrow-in.png"}},
{"type":"AudioAnalyzePeak","data":{"defaults":{"name":{"value":"new"}},"shortName":"peak","inputs":1,"outputs":0,"category":"analyze-function","color":"#E6E0F8","icon":"arrow-in.png"}},
{"type":"AudioAnalyzeRMS","data":{"defaults":{"name":{"value":"new"}},"shortName":"rms","inputs":1,"outputs":0,"category":"analyze-function","color":"#E6E0F8","icon":"arrow-in.png"}},
{"type":"AudioAnalyzeFFT256","data":{"defaults":{"name":{"value":"new"}},"shortName":"fft256","inputs":1,"outputs":0,"category":"analyze-function","color":"#E6E0F8","icon":"arrow-in.png"}},
{"type":"AudioAnalyzeFFT1024","data":{"defaults":{"name":{"value":"new"}},"shortName":"fft1024","inputs":1,"outputs":0,"category":"analyze-function","color":"#E6E0F8","icon":"arrow-in.png"}},
{"type":"AudioAnalyzeToneDetect","data":{"defaults":{"name":{"value":"new"}},"shortName":"tone","inputs":1,"outputs":0,"category":"analyze-function","color":"#E6E0F8","icon":"arrow-in.png"}},
{"type":"AudioAnalyzeNoteFrequency","data":{"defaults":{"name":{"value":"new"}},"shortName":"notefreq","inputs":1,"outputs":0,"category":"analyze-function","color":"#E6E0F8","icon":"arrow-in.png"}},
{"type":"AudioAnalyzePrint","data":{"defaults":{"name":{"value":"new"}},"shortName":"print","inputs":1,"outputs":0,"category":"analyze-function","color":"#E6E0F8","icon":"arrow-in.png"}},
{"type":"AudioControlSGTL5000","data":{"defaults":{"name":{"value":"new"}},"shortName":"sgtl5000","inputs":0,"outputs":0,"category":"control-function","color":"#E6E0F8","icon":"arrow-in.png"}},
{"type":"AudioControlAK4558","data":{"defaults":{"name":{"value":"new"}},"shortName":"ak4558","inputs":0,"outputs":0,"category":"control-function","color":"#E6E0F8","icon":"arrow-in.png"}},
{"type":"AudioControlCS4272","data":{"defaults":{"name":{"value":"new"}},"shortName":"cs4272","inputs":0,"outputs":0,"category":"control-function","color":"#E6E0F8","icon":"arrow-in.png"}},
{"type":"AudioControlWM8731","data":{"defaults":{"name":{"value":"new"}},"shortName":"wm8731","inputs":0,"outputs":0,"category":"control-function","color":"#E6E0F8","icon":"arrow-in.png"}},
{"type":"AudioControlWM8731master","data":{"defaults":{"name":{"value":"new"}},"shortName":"wm8731m","inputs":0,"outputs":0,"category":"control-function","color":"#E6E0F8","icon":"arrow-in.png"}}
]}
</script>
<script type="text/x-red" data-help-name="AudioInputI2S">
<h3>Summary</h3>
<div class=tooltipinfo>
<p>Receive 16 bit stereo audio from the
<a href="http://www.pjrc.com/store/teensy3_audio.html" target="_blank">audio shield</a>
or another I2S device, using I2S master mode.</p>
<p align=center><img src="img/audioshield_inputs.jpg"></p>
</div>
<h3>Audio Connections</h3>
<table class=doc align=center cellpadding=3>
<tr class=top><th>Port</th><th>Purpose</th></tr>
<tr class=odd><td align=center>Out 0</td><td>Left Channel</td></tr>
<tr class=odd><td align=center>Out 1</td><td>Right Channel</td></tr>
</table>
<h3>Functions</h3>
<p>This object has no functions to call from the Arduino sketch. It
simply streams data from the I2S hardware to its 2 output ports.</p>
<h3>Hardware</h3>
<p align=center><img src="img/audioshield_backside.jpg"></p>
<p>The I2S signals are used in "master" mode, where Teensy creates
all 3 clock signals and controls all data timing.</p>
<table class=doc align=center cellpadding=3>
<tr class=top><th>Pin</th><th>Signal</th><th>Direction</th></tr>
<tr class=odd><td align=center>9</td><td>BCLK</td><td>Output</td></tr>
<tr class=odd><td align=center>11</td><td>MCLK</td><td>Output</td></tr>
<tr class=odd><td align=center>13</td><td>RX</td><td>Input</td></tr>
<tr class=odd><td align=center>23</td><td>LRCLK</td><td>Output</td></tr>
</table>
<p>Audio from
master mode I2S may be used in the same project as ADC, DAC and
PWM signals, because all remain in sync to Teensy's timing</p>
<h3>Examples</h3>
<p class=exam>File > Examples > Audio > HardwareTesting > PassThroughStereo
</p>
<p class=exam>File > Examples > Audio > Recorder
</p>
<p class=exam>File > Examples > Audio > Analysis > PeakMeterStereo
</p>
<p class=exam>File > Examples > Audio > Analysis > FFT
</p>
<p class=exam>File > Examples > Audio > Analysis > SpectrumAnalyzerBasic
</p>
<p class=exam>File > Examples > Audio > Effects > Chorus
</p>
<p class=exam>File > Examples > Audio > Effects > Flange
</p>
<p class=exam>File > Examples > Audio > Effects > Filter
</p>
<p class=exam>File > Examples > Audio > Effects > Filter_FIR
</p>
<h3>Notes</h3>
<p>Normally, this object is used with the Audio Shield, which
is controlled separately by the "sgtl5000" object.</p>
<p>Only one I2S input and one I2S output object may be used. Master
and slave modes may not be mixed (both must be of the same type).
</p>
<p>I2S master objects can be used together with non-I2S input and output
objects, for simultaneous audio streaming on different hardware.</p>
</script>
<script type="text/x-red" data-template-name="AudioInputI2S">
<div class="form-row">
<label for="node-input-name"><i class="fa fa-tag"></i> Name</label>
<input type="text" id="node-input-name" placeholder="Name">
</div>
</script>
<script type="text/x-red" data-help-name="AudioInputI2SQuad">
<h3>Summary</h3>
<div class=tooltipinfo>
<p>Receive 16 bit quad (4) channel audio from two
<a href="http://www.pjrc.com/store/teensy3_audio.html" target="_blank">audio shields</a>
or another I2S devices, using I2S master mode.</p>
<p align=center><img src="img/audioshield_quad_in.jpg"></p>
</div>
<h3>Audio Connections</h3>
<table class=doc align=center cellpadding=3>
<tr class=top><th>Port</th><th>Purpose</th></tr>
<tr class=odd><td align=center>Out 0</td><td>Channel #1</td></tr>
<tr class=odd><td align=center>Out 1</td><td>Channel #2</td></tr>
<tr class=odd><td align=center>Out 2</td><td>Channel #3</td></tr>
<tr class=odd><td align=center>Out 3</td><td>Channel #4</td></tr>
</table>
<h3>Functions</h3>
<p>This object has no functions to call from the Arduino sketch. It
simply streams data from the I2S hardware to its 4 output ports.</p>
<h3>Hardware</h3>
<p>See this Sparkfun blog for <a href="https://www.sparkfun.com/news/2055" target="_blank">how
to connect two audio adaptors for 4 channel audio</a>.
<p>The I2S signals are used in "master" mode, where Teensy creates
all 3 clock signals and controls all data timing.</p>
<table class=doc align=center cellpadding=3>
<tr class=top><th>Pin</th><th>Signal</th><th>Direction</th></tr>
<tr class=odd><td align=center>9</td><td>BCLK</td><td>Output</td></tr>
<tr class=odd><td align=center>11</td><td>MCLK</td><td>Output</td></tr>
<tr class=odd><td align=center>13</td><td>RX</td><td>Input</td></tr>
<tr class=odd><td align=center>30</td><td>RX</td><td>Input</td></tr>
<tr class=odd><td align=center>23</td><td>LRCLK</td><td>Output</td></tr>
</table>
<p>Audio from
master mode I2S may be used in the same project as ADC, DAC and
PWM signals, because all remain in sync to Teensy's timing</p>
<h3>Examples</h3>
<p class=exam>File > Examples > Audio > HardwareTesting > PassThroughQuad
</p>
<h3>Notes</h3>
<p>Normally, this object is used with two Audio Shield, which
are controlled separately by a pair "sgtl5000" object.</p>
</script>
<script type="text/x-red" data-template-name="AudioInputI2SQuad">
<div class="form-row">
<label for="node-input-name"><i class="fa fa-tag"></i> Name</label>
<input type="text" id="node-input-name" placeholder="Name">
</div>
</script>
<script type="text/x-red" data-help-name="AudioInputAnalog">
<h3>Summary</h3>
<div class=tooltipinfo>
<p>Receive audio using the built-in analog to digital converter.</p>
</div>
<h3>Audio Connections</h3>
<table class=doc align=center cellpadding=3>
<tr class=top><th>Port</th><th>Purpose</th></tr>
<tr class=odd><td align=center>Out 0</td><td>Audio Channel</td></tr>
</table>
<h3>Functions</h3>
<p>This object has no functions to call from the Arduino sketch. It
simply streams data from the ADC to its output port.</p>
<h3>Hardware</h3>
<p>Pin A2 is used for audio input. This circuitry is recommended.</p>
<p align=center><img src="img/adccircuit.png"></p>
<p>Signal range is 0 to 1.2V</p>
<h3>Examples</h3>
<p class=exam>File > Examples > Audio > HardwareTesting > PassThroughMono
</p>
<p class=exam>File > Examples > Audio > Analysis > PeakMeterMono
</p>
<p class=exam>File > Examples > Audio > Analysis > DialTone_7segment
</p>
<p class=exam>File > Examples > OctoWS2811 > SpectrumAnalyzer
</p>
<h3>Notes</h3>
<p>A different pin may be used, but adding it as an parameter
to the AudioInputAnalog object definition.
</p>
<p>For example, to use pin A3:
</p>
<p class=desc><span class=keyword>AudioInputAnalog</span> adc1(<span class=literal>A3</span>);
</p>
<p>Noise due to high source impedance, which allows rapidly switching digital signals
to capacitively couple... avoiding higher analog impedance is the solution.</p>
<p>Power Supply rejection issue with simple DC bias (bigger capacitor may be needed if 3.3V has low frequency noise)</p>
<p>Algorithm for automatic DC bias tracking</p>
<p>TODO: actual noise measurements with different input circuitry
(it's not as quiet as the audio shield)</p>
</script>
<script type="text/x-red" data-template-name="AudioInputAnalog">
<div class="form-row">
<label for="node-input-name"><i class="fa fa-tag"></i> Name</label>
<input type="text" id="node-input-name" placeholder="Name">
</div>
</script>
<script type="text/x-red" data-help-name="AudioInputI2Sslave">
<h3>Summary</h3>
<div class=tooltipinfo>
<p>Receive 16 bit stereo audio from an I2S device using I2S slave mode
(where the ADC or codec chip, not Teensy, controls audio timing).</p>
</div>
<h3>Audio Connections</h3>
<table class=doc align=center cellpadding=3>
<tr class=top><th>Port</th><th>Purpose</th></tr>
<tr class=odd><td align=center>Out 0</td><td>Left Channel</td></tr>
<tr class=odd><td align=center>Out 1</td><td>Right Channel</td></tr>
</table>
<h3>Functions</h3>
<p>This object has no functions to call from the Arduino sketch. It
simply streams data from the I2S hardware to its 2 output ports.</p>
<h3>Hardware</h3>
<p>The I2S signals are used in "slave" mode, where the I2S device controls
data timing.</p>
<table class=doc align=center cellpadding=3>
<tr class=top><th>Pin</th><th>Signal</th><th>Direction</th></tr>
<tr class=odd><td align=center>9</td><td>BCLK</td><td>Input</td></tr>
<tr class=odd><td align=center>13</td><td>RX</td><td>Input</td></tr>
<tr class=odd><td align=center>23</td><td>LRCLK</td><td>Input</td></tr>
</table>
<!--
<h3>Examples</h3>
<p class=exam>File > Examples > Audio >
</p>
-->
<h3>Notes</h3>
<p>Slave mode I2S <b>should not used in the same project as ADC, DAC and
PWM</b> signals. Differences in timing between the I2S device and
Teensy's clock can cause occasional audio glitches when I2S slave mode
is used together with other input or output objects based on Teensy's
timing.</p>
<p>Only one I2S input and one I2S output object may be used. Master
and slave modes may not be mixed (both must be of the same type).
</p>
</script>
<script type="text/x-red" data-template-name="AudioInputI2Sslave">
<div class="form-row">
<label for="node-input-name"><i class="fa fa-tag"></i> Name</label>
<input type="text" id="node-input-name" placeholder="Name">
</div>
</script>
<script type="text/x-red" data-help-name="AudioInputUSB">
<h3>Summary</h3>
<div class=tooltipinfo>
<p>Receive stereo audio from a PC or Mac. Teensy appears as a USB
sound device.</p>
<p align=center><img src="img/usbtype_audio_in.png"></p>
</div>
<h3>Audio Connections</h3>
<table class=doc align=center cellpadding=3>
<tr class=top><th>Port</th><th>Purpose</th></tr>
<tr class=odd><td align=center>Out 0</td><td>Left Channel</td></tr>
<tr class=odd><td align=center>Out 1</td><td>Right Channel</td></tr>
</table>
<h3>Functions</h3>
<p>This object has no functions to call from the Arduino sketch. It
simply streams data from the USB to its 2 output ports.</p>
<!--
<h3>Hardware</h3>
-->
<h3>Examples</h3>
<p class=exam>File > Examples > Audio > HardwareTesting > PassThroughUSB</p>
</p>
<h3>Notes</h3>
<p>Arduino's <b>Tools > USB Type</b> menu must be set to <b>Audio</b>.
</p>
<p align=center><img src="img/usbtype_audio.png"></p>
<p>USB input & output does not cause the Teensy Audio Library to
update. At least one non-USB input or output object must be
present for the entire library to update properly.</p>
</script>
<script type="text/x-red" data-template-name="AudioInputUSB">
<div class="form-row">
<label for="node-input-name"><i class="fa fa-tag"></i> Name</label>
<input type="text" id="node-input-name" placeholder="Name">
</div>
</script>
<script type="text/x-red" data-help-name="AudioOutputI2S">
<h3>Summary</h3>
<div class=tooltipinfo>
<p>Transmit 16 bit stereo audio to the
<a href="http://www.pjrc.com/store/teensy3_audio.html" target="_blank">audio shield</a>
or another I2S device, using I2S master mode.</p>
<p align=center><img src="img/audioshield_outputs.jpg"></p>
</div>
<h3>Audio Connections</h3>
<table class=doc align=center cellpadding=3>
<tr class=top><th>Port</th><th>Purpose</th></tr>
<tr class=odd><td align=center>In 0</td><td>Left Channel</td></tr>
<tr class=odd><td align=center>In 1</td><td>Right Channel</td></tr>
</table>
<h3>Functions</h3>
<p>This object has no functions to call from the Arduino sketch. It
simply streams data from its 2 input ports to the I2S hardware.</p>
<h3>Hardware</h3>
<p align=center><img src="img/audioshield_backside.jpg"></p>
<p>The I2S signals are used in "master" mode, where Teensy creates
all 3 clock signals and controls all data timing.</p>
<table class=doc align=center cellpadding=3>
<tr class=top><th>Pin</th><th>Signal</th><th>Direction</th></tr>
<tr class=odd><td align=center>9</td><td>BCLK</td><td>Output</td></tr>
<tr class=odd><td align=center>11</td><td>MCLK</td><td>Output</td></tr>
<tr class=odd><td align=center>22</td><td>TX</td><td>Output</td></tr>
<tr class=odd><td align=center>23</td><td>LRCLK</td><td>Output</td></tr>
</table>
<p>Audio from
master mode I2S may be used in the same project as ADC, DAC and
PWM signals, because all remain in sync to Teensy's timing</p>
<h3>Examples</h3>
<p>Nearly all the examples use this object. Here are some of the highlights:</p>
<p class=exam>File > Examples > Audio > HardwareTesting > PassThroughStereo
</p>
<p class=exam>File > Examples > Audio > SamplePlayer
</p>
<p class=exam>File > Examples > Audio > Recorder
</p>
<p class=exam>File > Examples > Audio > WavFilePlayer
</p>
<p class=exam>File > Examples > Audio > Effects > Chorus
</p>
<p class=exam>File > Examples > Audio > Synthesis > PlaySynthMusic
</p>
<h3>Notes</h3>
<p>Normally, this object is used with the Audio Shield, which
is controlled separately by the "sgtl5000" object.</p>
<p>Only one I2S input and one I2S output object may be used. Master
and slave modes may not be mixed (both must be of the same type).
</p>
</script>
<script type="text/x-red" data-template-name="AudioOutputI2S">
<div class="form-row">
<label for="node-input-name"><i class="fa fa-tag"></i> Name</label>
<input type="text" id="node-input-name" placeholder="Name">
</div>
</script>
<script type="text/x-red" data-help-name="AudioOutputI2SQuad">
<h3>Summary</h3>
<div class=tooltipinfo>
<p>Transmit quad (4) channel 16 bit audio, using I2S master mode.</p>
<p align=center><img src="img/audioshield_quad_out.jpg"></p>
</div>
<h3>Audio Connections</h3>
<table class=doc align=center cellpadding=3>
<tr class=top><th>Port</th><th>Purpose</th></tr>
<tr class=odd><td align=center>In 0</td><td>Channel #1</td></tr>
<tr class=odd><td align=center>In 1</td><td>Channel #2</td></tr>
<tr class=odd><td align=center>In 2</td><td>Channel #3</td></tr>
<tr class=odd><td align=center>In 3</td><td>Channel #4</td></tr>
</table>
<h3>Functions</h3>
<p>This object has no functions to call from the Arduino sketch. It
simply streams data from its 4 input ports to the I2S hardware.</p>
<h3>Hardware</h3>
<p>See this Sparkfun blog for <a href="https://www.sparkfun.com/news/2055" target="_blank">how
to connect two audio adaptors for 4 channel audio</a>. More
<a href="https://forum.pjrc.com/threads/29373-Bit-bang-multiple-I2S-inputs-simultaneously?p=79606#post79606" target="_blank">details</a> are also available.
<p>The I2S signals are used in "master" mode, where Teensy creates
all 3 clock signals and controls all data timing.</p>
<table class=doc align=center cellpadding=3>
<tr class=top><th>Pin</th><th>Signal</th><th>Direction</th></tr>
<tr class=odd><td align=center>9</td><td>BCLK</td><td>Output</td></tr>
<tr class=odd><td align=center>11</td><td>MCLK</td><td>Output</td></tr>
<tr class=odd><td align=center>22</td><td>TX (ch 1+2)</td><td>Output</td></tr>
<tr class=odd><td align=center>15</td><td>TX (ch 3+4)</td><td>Output</td></tr>
<tr class=odd><td align=center>23</td><td>LRCLK</td><td>Output</td></tr>
</table>
<p>Audio from
master mode I2S may be used in the same project as ADC, DAC and
PWM signals, because all remain in sync to Teensy's timing</p>
<h3>Examples</h3>
<p class=exam>File > Examples > Audio > HardwareTesting > PassThroughQuad
</p>
<p class=exam>File > Examples > Audio > HardwareTesting > SGTL5000 > QuadChannelOutput
</p>
<h3>Notes</h3>
<p>Normally, this object is used with two Audio Shields, which
are controlled separately by a pair of "sgtl5000" objects.</p>
</script>
<script type="text/x-red" data-template-name="AudioOutputI2SQuad">
<div class="form-row">
<label for="node-input-name"><i class="fa fa-tag"></i> Name</label>
<input type="text" id="node-input-name" placeholder="Name">
</div>
</script>
<script type="text/x-red" data-help-name="AudioOutputSPDIF">
<h3>Summary</h3>
<div class=tooltipinfo>
<p>Transmit 16 bit stereo audio as Digital S/PDIF.</p>
<p align=center><img src="img/spdif_proto.jpg"></p>
</div>
<h3>Audio Connections</h3>
<table class=doc align=center cellpadding=3>
<tr class=top><th>Port</th><th>Purpose</th></tr>
<tr class=odd><td align=center>In 0</td><td>Left Channel</td></tr>
<tr class=odd><td align=center>In 1</td><td>Right Channel</td></tr>
</table>
<h3>Functions</h3>
<p>This object has no functions to call from the Arduino sketch. It
simply streams data from its 2 input ports S/PDIF encoded digital
audio on pin 22.</p>
<h3>Hardware</h3>
<p>The S/PDIF output signal can be used to drive an optical TOSLINK
cable, or a standard (usually orange) RCA jack.</p>
<table class=doc align=center cellpadding=3>
<tr class=top><th>Pin</th><th>Signal</th><th>Direction</th></tr>
<tr class=odd><td align=center>22</td><td>S/PDIF</td><td>Output</td></tr>
</table>
<p>For optical TOSLINK output, this
<a href="https://www.oshpark.com/shared_projects/KcDBKHta" target="_blank">OSH Park board</a>
can be used with the inexpensive Everlight PLT133/T6A connector, available
at Digikey, 1080-1434-ND.
</p>
<h3>Examples</h3>
<p>The AudioOutputSPDIF object can be used in place of the AudioOutputI2S object,
<p>used in nearly all the examples. The WavFilePlayer shows how to substitute
output objects for different hardware types.
</p>
<p class=exam>File > Examples > Audio > WavFilePlayer
</p>
<h3>Credits</h3>
<p><a href="https://github.com/FrankBoesing" target="_blank">Frank Boesing</a>
developed the AudioOutputSPDIF code. The original
<a href="https://forum.pjrc.com/threads/28639-S-pdif" target="_blank">forum disussion</a>
included valuable input and code from "kpc".
<h3>Notes</h3>
<p>S/PDIF output uses the I2S hardware. This object can not be used
together with any of the I2S objects, because it requires the I2S
hardware with different internal settings.</p>
</p>
</script>
<script type="text/x-red" data-template-name="AudioOutputSPDIF">
<div class="form-row">
<label for="node-input-name"><i class="fa fa-tag"></i> Name</label>
<input type="text" id="node-input-name" placeholder="Name">
</div>
</script>
<script type="text/x-red" data-help-name="AudioOutputAnalog">
<h3>Summary</h3>
<div class=tooltipinfo>
<p>Transmit 12 bit audio using Teensy's built-in digital to analog converter.</p>
<p align=center><img src="img/dac_speaker.jpg"><br>
<small><a href="http://www.pjrc.com/store/prop_shield.html" target="_blank_">Prop Shield with 4Ω Speaker</a></small></p>
</div>
<h3>Audio Connections</h3>
<table class=doc align=center cellpadding=3>
<tr class=top><th>Port</th><th>Purpose</th></tr>
<tr class=odd><td align=center>In 0</td><td>Audio Channel</td></tr>
</table>
<h3>Functions</h3>
<p class=func><span class=keyword>analogReference</span>(ref);</p>
<p class=desc>Configure output voltage range:<br>
<span class=literal>INTERNAL</span> selects 1.2 volt peak-to-peak output.<br>
<span class=literal>EXTERNAL</span> selects 3.3 volt peak-to-peak output.
</p>
<h3>Hardware</h3>
<p align=center><img src="img/dacpin.jpg"></p>
<p>Signal range default is 0 to 1.2V</p>
<p>The output voltage has DC level. Some applications require a DC-blocking capacitor. If unsure, a 10µF is usually a safe value to use. If an aluminum or tantalum capacitor is used, the positive terminal should connect to Teensy's DAC pin.</p>
<p>The DAC pin is used with the
<a href="http://www.pjrc.com/store/prop_shield.html" target="_blank_">Prop Shield</a>
to drive speakers.</p>
<h3>Examples</h3>
<p class=exam>File > Examples > Audio > HardwareTesting > PassThroughMono
</p>
<p class=exam>File > Examples > Audio > SamplePlayer
</p>
<p class=exam><a href="https://github.com/PaulStoffregen/TouchGuitar" target="_blank">TouchGuitar</a>
</p>
<p class=exam><a href="https://community.arm.com/groups/embedded/blog/2014/05/23/led-video-panel-at-maker-faire-2014" target="_blank">LED Video Board</a>
</p>
<p class=exam>File > Examples > OctoWS2811 > VideoSDcard
</p>
<p class=exam>File > Examples > SerialFlash > MP3Player
</p>
<h3>Notes</h3>
<p>The output rate is 44.1 kHz (no oversampling). Ultrasonic noise present if
not filtered. This may not
be an issue for many uses, but care should be used if amplified and driven
to high power tweeters.</p>
<p>When using 3.3V output, the power supply is used for the analog reference. Noise
present on the 3.3V power can couple to the DAC output signal.
</p>
</script>
<script type="text/x-red" data-template-name="AudioOutputAnalog">
<div class="form-row">
<label for="node-input-name"><i class="fa fa-tag"></i> Name</label>
<input type="text" id="node-input-name" placeholder="Name">
</div>
</script>
<script type="text/x-red" data-help-name="AudioOutputPWM">
<h3>Summary</h3>
<div class=tooltipinfo>
<p>Transmit audio using Teensy 3.1's PWM pins. Two pins are
used for coarse and fine pulses, to be combined by scaled
resistors.</p>
</div>
<h3>Audio Connections</h3>
<table class=doc align=center cellpadding=3>
<tr class=top><th>Port</th><th>Purpose</th></tr>
<tr class=odd><td align=center>In 0</td><td>Audio Channel</td></tr>
</table>
<h3>Functions</h3>
<p>This object has no functions to call from the Arduino sketch. It
simply streams data from the its input port to the PWM pins.</p>
<h3>Hardware</h3>
<p>The following circuit is recommended.</p>
<p align=center><img src="img/pwmdualcircuit.jpg"></p>
<p>Signal range is approx 1.55 Vp-p.</p>
<p>These resistor values assume approx 20 ohms output impedance
on the digital pins. The 127K resistor may be adjusted or
trimmed for variation in output drive and tolerance on the
475 ohm resistor.</p>
<p>A plastic film (Polypropylene, Polyethylene, Polyester, etc) or
C0G/NPO ceramic capacitor should be used for filtering. Low
quality ceramic (X7R, Y5V, Z5U, etc) can cause signal distortion.</p>
<h3>Examples</h3>
<p class=exam>File > Examples > Audio > HardwareTesting > PassThroughMono
</p>
<h3>Notes</h3>
<p>This object only works properly when Tools > CPU_Speed is set to
48 or 96 MHz. Other speeds aren't supported and will likely fail
in strange ways.</p>
<p>The PWM carrier frequency is 88.2 kHz. The suggested circuit
will only slightly filter the carrier. Extra filtering will be
required for a clean signal without the ultrasonic PWM carrier.
</p>
<p>Analog signals created by filtering PWM waveforms use the digital
power supply as their reference voltage. Any noise on the digital
power line can directly couple to the output signal. The built-in DAC or
<a href="http://www.pjrc.com/store/teensy3_audio.html" target="_blank">audio shield</a>
should be used when higher quality signals are needed.</p>
</script>
<script type="text/x-red" data-template-name="AudioOutputPWM">
<div class="form-row">
<label for="node-input-name"><i class="fa fa-tag"></i> Name</label>
<input type="text" id="node-input-name" placeholder="Name">
</div>
</script>
<script type="text/x-red" data-help-name="AudioOutputI2Sslave">
<h3>Summary</h3>
<div class=tooltipinfo>
<p>Transmit 16 bit stereo audio to an I2S device using I2S slave mode
(where the DAC or codec chip, not Teensy, controls audio timing).</p>
</div>
<h3>Audio Connections</h3>
<table class=doc align=center cellpadding=3>
<tr class=top><th>Port</th><th>Purpose</th></tr>
<tr class=odd><td align=center>In 0</td><td>Left Channel</td></tr>
<tr class=odd><td align=center>In 1</td><td>Right Channel</td></tr>
</table>
<h3>Functions</h3>
<p>This object has no functions to call from the Arduino sketch. It
simply streams data from its 2 input ports to the I2S hardware.</p>
<h3>Hardware</h3>
<p>The I2S signals are used in "slave" mode, where the I2S device controls
data timing.</p>
<table class=doc align=center cellpadding=3>
<tr class=top><th>Pin</th><th>Signal</th><th>Direction</th></tr>
<tr class=odd><td align=center>9</td><td>BCLK</td><td>Input</td></tr>
<tr class=odd><td align=center>22</td><td>TX</td><td>Output</td></tr>
<tr class=odd><td align=center>23</td><td>LRCLK</td><td>Input</td></tr>
</table>
<h3>Examples</h3>
<p class=exam>File > Examples > Audio > HardwareTesting > WM8731MikroSine
</p>
<h3>Notes</h3>
<p>Slave mode I2S <b>should not used in the same project as ADC, DAC and
PWM</b> signals. Differences in timing between the I2S device and
Teensy's clock can cause occasional audio glitches when I2S slave mode
is used together with other input or output objects based on Teensy's
timing.</p>
<p>Only one I2S input and one I2S output object may be used. Master
and slave modes may not be mixed (both must be of the same type).
</p>
</script>
<script type="text/x-red" data-template-name="AudioOutputI2Sslave">
<div class="form-row">
<label for="node-input-name"><i class="fa fa-tag"></i> Name</label>
<input type="text" id="node-input-name" placeholder="Name">
</div>
</script>
<script type="text/x-red" data-help-name="AudioOutputUSB">
<h3>Summary</h3>
<div class=tooltipinfo>
<p>Send stereo audio to a PC or Mac. Teensy appears as a USB
sound device.</p>
<p align=center><img src="img/usbtype_audio_out.png"></p>
</div>
<h3>Audio Connections</h3>
<table class=doc align=center cellpadding=3>
<tr class=top><th>Port</th><th>Purpose</th></tr>
<tr class=odd><td align=center>In 0</td><td>Left Channel</td></tr>
<tr class=odd><td align=center>In 1</td><td>Right Channel</td></tr>
</table>
<h3>Functions</h3>
<p>This object has no functions to call from the Arduino sketch. It
simply streams from it's 2 input ports to the USB.</p>
<!--
<h3>Hardware</h3>
-->
<h3>Examples</h3>
<p class=exam>File > Examples > Audio > HardwareTesting > WavFilePlayerUSB</p>
</p>
<h3>Notes</h3>
<p>Arduino's <b>Tools > USB Type</b> menu must be set to <b>Audio</b>.
</p>
<p align=center><img src="img/usbtype_audio.png"></p>
<p>USB input & output does not cause the Teensy Audio Library to
update. At least one non-USB input or output object must be
present for the entire library to update properly.</p>
</script>
<script type="text/x-red" data-template-name="AudioOutputUSB">
<div class="form-row">
<label for="node-input-name"><i class="fa fa-tag"></i> Name</label>
<input type="text" id="node-input-name" placeholder="Name">
</div>
</script>
<script type="text/x-red" data-help-name="AudioMixer4">
<h3>Summary</h3>
<div class=tooltipinfo>
<p>Combine up to 4 audio signals together, each with adjustable gain.