TIDEP-0077

Audio Preprocessing System Reference Design for Voice-Based Applications

TIDEP-0077

Design files

Overview

This reference design uses multiple microphones, a beamforming algorithm, and other processes to extract clear speech and audio amidst noise and other clutter.  The rapid increase in applications that are used in noise-prone environments for voice activated digital assistants creates demand for systems that extract clear voice from noisy environments.  The reference design uses a microphone array and a sophisticated signal processing to extract clear audio from noisy environments.

Features
  • Single digital signal processor (DSP) SoC for audio preprocessing
  • Linear microphone board (LMB) with 4 microphones
  • Audio-preprocessing software
  • Hardware and software solution with modularized components to build an audio preprocessing solution for clear voice triggering and recognition
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A fully assembled board has been developed for testing and performance validation only, and is not available for sale.

Design files & products

Design files

Download ready-to-use system files to speed your design process.

TIDUCY1C.PDF (4918 K)

Reference design overview and verified performance test data

TIDRRC4.PDF (257 K)

Detailed schematic diagram for design layout and components

TIDRQT4.PDF (89 K)

Complete listing of design components, reference designators, and manufacturers/part numbers

TIDRRC6.PDF (141 K)

Detailed overview of design layout for component placement

TIDRQT5.PDF (196 K)

Detailed overview of design layout for component placement

TIDRRC8.ZIP (16685 K)

Files used for 3D models or 2D drawings of IC components

TIDRQT7.ZIP (18998 K)

Files used for 3D models or 2D drawings of IC components

TIDCDJ1.ZIP (5088 K)

Design file that contains information on physical board layer of design PCB

TIDCDE5.ZIP (6085 K)

Design file that contains information on physical board layer of design PCB

TIDRRC7.PDF (1220 K)

PCB layer plot file used for generating PCB design layout

TIDRQT6.ZIP (10228 K)

PCB layer plot file used for generating PCB design layout

Products

Includes TI products in the design and potential alternatives.

Digital signal processors (DSPs)

TMS320C5517Low power C55x fixed point DSP- up to 200MHz, USB, LCD interface, FFT HWA, SAR ADC

Data sheet: PDF | HTML
Audio ADCs

PCM1864103dB 4-Channel Software-Controlled Audio ADC With Universal Front End

Data sheet: PDF | HTML

Technical documentation

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Type Title Date
* Design guide Audio Preprocessing System Reference Design for Voice-Based Apps Using C5517 (Rev. C) Jan. 10, 2018
VID Voice Preprocessing Demo on C5517 Jul. 12, 2017
White paper Voice as the user interface – a new era in speech processing white Paper May 09, 2017

Related design resources

Software development

DRIVER OR LIBRARY
SPRC133 TMS320C55x Chip Support Libraries (CSL) – Standard and Low-Power TELECOMLIB Telecom and Media Libraries - FAXLIB, VoLIB and AEC/AER for TMS320C64x+ and TMS320C55x Processors

Reference designs

REFERENCE DESIGN
TIDA-01454 PCM1864-Based Circular Microphone Board (CMB) Reference Design

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