DIGITAL SIGNAL PROCESSOR
D Cancels the Acoustic Echo Common in
Hands-Free Use of Cellular Phones in
Automobiles
– Eliminates Echo Created by Spea...
Description
D Cancels the Acoustic Echo Common in
Hands-Free Use of Cellular Phones in
Automobiles
– Eliminates Echo Created by Speaker
Output Feeding Back Into the
Microphone
D Suppresses Wind, Engine, and Tire Noise D Line Echo Canceler D Standard Independent
– IS-54B, IS-136, GSM, AMPS, IS-95
D Continuous, Automatic Adaptation to
Changing Acoustic Environment
– Initial System Training Not Required
D Based on TMS320C5x Platforms D Support for Industry Standard
Microcontrollers
D Interfaces Easily with TI’s Voice Codec, the
TCM320AC36
TMS320WP010 DIGITAL SIGNAL PROCESSOR
FOR AEC/LEC/ANS
SPRS040–OCTOBER 1995
D Acoustic Echo Canceler Performance
– Length of Echo Path up to 44 ms – Initial Adaptation Rate > 20 dB/s for
Speech Signals – Zero Speech Delay – Echo Return Loss up to 30 dB for
Speech Echo in Automobiles and 41 dB for Sine Wave Input
D Noise Suppressor Performance
– Up to 10 dB Noise Suppression for Hands-Free Use of Cellular Phones in Automobiles Without Distorting Speech Signals
– 16 ms Processing Delay – Continuous Adaptation
D Demonstration Platform
– Allows Evaluation of Software Algorithm Performance in Lab and Automobile
– Ability to Enable/Disable AEC, ANS, and LEC
description
For the cellular phone cradle market, the TMS320WP010 provides enhanced quality, full-duplex, hands-free communications. The ’WP010 is a ROM-coded DSP that provides all the adaptive filtering and processing necessary for acoustic echo cancellation (AEC), line echo cancellation (LEC), and adaptive ...
Similar Datasheet