webaudio-tools

Useful tools for WebAudio.

npm i webaudio-tools

pnpm add webaudio-tools

yarn add webaudio-tools

API

# MIDIMessageEvent

# constructor(type, { data })

# new MIDIMessageEvent()

MIDIMessageEvent

# type

string

# payload

{

# data

Uint8Array

}

# data

Uint8Array

# receivedTime

number

# type

string

# PeakingDetectorNode

# constructor(ctx)

# new PeakingDetectorNode()

PeakingDetectorNode

# ctx

BaseAudioContext

# decibelsThreshold  =  -1

number

# isPeaking  =  false

boolean

# onpeaking()

onpeaking()  =>

void

# reset()

reset()  =>

void

# PipeNode

# constructor(context, options)

# new PipeNode()

PipeNode

# context

BaseAudioContext

# options

AudioWorkletNodeOptions & {

# port

MessagePort

}

# context

BaseAudioContext

# options

AudioWorkletNodeOptions & {

# port

MessagePort

}

# rpc

Rpc

# registeredContexts

Set<BaseAudioContext>

# create(context, options)

# context

BaseAudioContext

# options

AudioWorkletNodeOptions & {

# port

MessagePort

}

create(context, options)  =>

Promise<PipeNode>

# register(context)

# context

BaseAudioContext

register(context)  =>

Promise<void>

# SilenceDetectorNode

# constructor(context, options)

# new SilenceDetectorNode()

SilenceDetectorNode

# context

BaseAudioContext

# options

AudioWorkletNodeOptions & {

# processorOptions

Partial<SilenceDetectorOptions>

}

# isSilent  =  true

boolean

# hasRegistered  =  false

boolean

# onplaying()

onplaying()  =>

void

# onsilence()

onsilence()  =>

void

# create(context, options)

# context

BaseAudioContext

# options  =  {}

AudioWorkletNodeOptions & {

# processorOptions

Partial<SilenceDetectorOptions>

}

create(context, options)  =>

Promise<SilenceDetectorNode>

# register(context)

# context

BaseAudioContext

register(context)  =>

Promise<void>

# MidiOp  =  ...

{

# NoteOff  =  0x80

number

# NoteOn  =  0x90

number

}

# createMidiEvent(time, data)

# time

number

# data

number []

createMidiEvent(time, data)  =>

MIDIMessageEvent

# createMidiNoteEvents(time, note, velocity, length)

# time

number

# note

number

# velocity

number

# length

number

createMidiNoteEvents(time, note, velocity, length)  =>

MIDIMessageEvent []

# dbToFloat(db)

# db

number

dbToFloat(db)  =>

number

# fetchAudioBuffer(ctx, url)

# ctx

AudioContext

# url

string

fetchAudioBuffer(ctx, url)  =>

Promise<AudioBuffer>

# fftLogIndexer(minFreq, maxFreq, sampleRate, fftSize)

# minFreq

number

# maxFreq

number

# sampleRate

number

# fftSize

number

fftLogIndexer(minFreq, maxFreq, sampleRate, fftSize)  =>

# (normal)

# normal

number

(normal)  =>

number

# floatToDb(float)

# float

number

floatToDb(float)  =>

number

Credits

• pipe-processor by stagas – AudioWorklet that pipes its output to a given message port.

Contributing

Fork or edit and submit a PR.

All contributions are welcome!

License

MIT © 2023 stagas