5秒后页面跳转
TMS320WP010 PDF预览

TMS320WP010

更新时间: 2024-10-27 12:22:27
品牌 Logo 应用领域
德州仪器 - TI 数字信号处理器
页数 文件大小 规格书
18页 277K
描述
DIGITAL SIGNAL PROCESSOR FOR AEC/LEC/ANS

TMS320WP010 数据手册

 浏览型号TMS320WP010的Datasheet PDF文件第2页浏览型号TMS320WP010的Datasheet PDF文件第3页浏览型号TMS320WP010的Datasheet PDF文件第4页浏览型号TMS320WP010的Datasheet PDF文件第5页浏览型号TMS320WP010的Datasheet PDF文件第6页浏览型号TMS320WP010的Datasheet PDF文件第7页 
TMS320WP010  
DIGITAL SIGNAL PROCESSOR  
FOR AEC/LEC/ANS  
SPRS040–OCTOBER 1995  
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  
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  
Suppresses Wind, Engine, and Tire Noise  
Line Echo Canceler  
Noise Suppressor Performance  
– Up to 10 dB Noise Suppression for  
Hands-Free Use of Cellular Phones in  
Automobiles Without Distorting Speech  
Signals  
Standard Independent  
– IS-54B, IS-136, GSM, AMPS, IS-95  
Continuous, Automatic Adaptation to  
Changing Acoustic Environment  
– Initial System Training Not Required  
– 16 ms Processing Delay  
Based on TMS320C5x Platforms  
– Continuous Adaptation  
Support for Industry Standard  
Microcontrollers  
Demonstration Platform  
– Allows Evaluation of Software Algorithm  
Performance in Lab and Automobile  
– Ability to Enable/Disable AEC, ANS, and  
LEC  
Interfaces Easily with TI’s Voice Codec, the  
TCM320AC36  
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 noise suppression  
(ANS).  
The ’WP010’s acoustic echo cancellation function is based on a Finite Impulse Response (FIR) filter with an  
adaptive coefficient updating algorithm. The adaptive algorithm updates continuously so that it can constantly  
track acoustic path changes from the speaker to the microphone. Based upon FIR filter coefficients, the echo  
signal can be estimated and subtracted from the observed signal at the microphone. The acoustic echo  
cancellation function provides continuous adaptation and needs no initial system training. It is capable of  
canceling an echo path of up to 44 milliseconds and provides up to 30 dB cancellation for speech signals. In  
addition, the initial convergence rate is faster than 20 dB per second.  
The line echo cancellation function cancels the near-end speech that has been reflected at the network switch  
and transmitted back to the cellular phone. The principle of the line echo cancellation function is very similar  
to that of the acoustic echo cancellation function. The difference is that the line echo cancellation function is  
designed to cancel the echo signal caused by network feedback due to impedance mismatch in the network  
circuit. The line echo cancellation function is capable of canceling a line echo path of up to 16 milliseconds.  
The received signal at the microphone consists of the near-end speech signal, acoustic feedback echo, and  
ambient noise from the environment. The purpose of the adaptive noise suppression function is to suppress  
ambient noise components without distorting near-end speech. The initial adaptation rate is about 3 dB per  
second without initial system training. It tracks the changes of the noise characteristics and suppresses noise  
accordingly. The adaptive noise suppression provides up to 10 dB of noise cancellation without degrading  
near-end speech.  
Please be aware that an important notice concerning availability, standard warranty, and use in critical applications of  
Texas Instruments semiconductor products and disclaimers thereto appears at the end of this data sheet.  
Copyright 1995, Texas Instruments Incorporated  
PRODUCTION DATA information is current as of publication date.  
Products conform to specifications per the terms of Texas Instruments  
standard warranty. Production processing does not necessarily include  
testing of all parameters.  
1
POST OFFICE BOX 655303 DALLAS, TEXAS 75265  

与TMS320WP010相关器件

型号 品牌 获取价格 描述 数据表
TMS320WP010PZ TI

获取价格

DIGITAL SIGNAL PROCESSOR FOR AEC/LEC/ANS
TMS320WP010PZA ETC

获取价格

Cell-Phone Circuit
TMS322512ALM-100MTAA TDK

获取价格

SMD/SMT 电感器(线圈)
TMS322512ALM-1R0MTAA TDK

获取价格

SMD/SMT 电感器(线圈)
TMS322512ALM-1R5MTAA TDK

获取价格

SMD/SMT 电感器(线圈)
TMS322512ALM-2R2MTAA TDK

获取价格

SMD/SMT 电感器(线圈)
TMS322512ALM-3R3MTAA TDK

获取价格

SMD/SMT 电感器(线圈)
TMS322512ALM-4R7MTAA TDK

获取价格

SMD/SMT 电感器(线圈)
TMS322512ALM-6R8MTAA TDK

获取价格

SMD/SMT 电感器(线圈)
TMS322512ALM-R10MTAA TDK

获取价格

SMD/SMT 电感器(线圈)