Acoustic Echo Cancellation, Hands Free (for TMS320C54x)
by France Telecom CNET

Software Overview

Algorithm of Acoustic Echo Cancellation for hands-free telephone with or without delay in the 
transmission of speech (phone band or wide band). The echo cancellation is made with an adaptative 
filtering at  8 kHz and a control and gain variation at 1 kHz.

Features and Benefits

•	Sampling rate: 8 kHz or 16 kHz
•	Quality: Very good quality

Processor and System Specifications

•	Devices supported: TMS320C54x
•	Algorithm category: Audio
•	Required: 
Program memory: 6 kwords
Data memory: 1 kword for one coder/decoder
Processor loading: 13 MIPS with a FIR (NLMS) of 300 coefficients

Company Background and Contact Information

Contact: 	Jean-Pierre PETIT
		France Telecom/CNET
		Technopole Anticipa 
		2 Avenue Pierre MARZIN
		22307 LANNION-CEDEX
		33-96-05-39-41
		Fax:  -33-96-05-13-16
		e-mail: petitjp@lannion.cnet.fr