Phase1System

This GitHub repository contains source code for Flat Earth, Inc.'s Open Speech FPGA Signal Processing Platform

Introduction

Flat Earth, Inc. was recently awarded an NIH SBIR to help develop Open Design Tools for Speech Signal Processing (NIH RFA-DC-16-002). Flat Earth is developing a FPGA based computational platform that will bring FPGA capabilities of real-time computation and deterministic low latency to the speech and hearing aid research community. Flat Earth has developed a Phase I system that demonstrates three subsystems. The first subsystem is the developed audio board that implements an audio codec and transmits the digital data to/from the FPGA. The second subsystem is the data plane in the FPGA fabric where all DSP processing is done in real-time. The third subsystem is the control of the data plane where Linux, running on ARM CPUs inside the FPGA, can communicate parameters to the data plane processing blocks in order to control them. Flat Earth’s goal is to develop a platform where users can design their DSP algorithms in Mathwork’s Simulink and then have these algorithms automatically placed in the FPGA where they will process data in real-time.

More information can be found at:

• https://flatearthinc.com/
• https://flatearthinc.com/open-speech-platform-0
• https://store.flatearthinc.com/

The Phase1System repository is organized as follows:

AD1939 Audio Codec (Analog Device's 4 ADC/8 DAC with PLL, 192 kHz, 24-Bit Codec)

• /AD1939 - contains source and material related to Analog Device's AD1939 audio codec that we used for the audio daughter card
  • /AD1939/Source_Files - contains the source code
    • /AD1939/Source_Files/Matlab - contains Matlab source code
    • /AD1939/Source_Files/VHDL - contains VHDL (and related) source code
    • /AD1939/Source_Files/IP - contains IP generated by Quartus Prime that is used by the VHDL files
  • /AD1939/Documentation - Data sheets, etc.

Quartus Project for System1

• /QuartusProject - contains the Quartus project files for System1
• /Qsys - contains the Qsys files for the Qsys component library

Software Released under the MIT License

Copyright 2017 Flat Earth, Inc.

Permission is hereby granted, free of charge, to any person obtaining a copy of this software and associated documentation files (the "Software"), to deal in the Software without restriction, including without limitation the rights to use, copy, modify, merge, publish, distribute, sublicense, and/or sell copies of the Software, and to permit persons to whom the Software is furnished to do so, subject to the following conditions:

The above copyright notice and this permission notice shall be included in all copies or substantial portions of the Software.

THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.