Acoustic-Echo Cancellation Software for Hands-Free Wireless Systems

Review of Acoustic Echo Cancellation Techniques for Voice over Ip

Acoustic Echo Cancellation (AEC) has become a necessity in today’s conferencing system in order to enhance the audio quality of hands-free communication systems. In recent years, many researchers and manufacturers have developed various AEC algorithms for telecommunication solutions in order to improve the quality of service. Many factors influence the design of an AEC system, such as computati...

On the Combination of Systems for Listening-Room Compensation and Acoustic Echo Cancellation in Hands-Free Teleconference Systems

Design Realization and Performance Evaluation of an Acoustic Echo Cancellation (aec) in Hands-free Communications Using Recursive Adaptive Algorithm

Nowadays, in the field of communications, AEC (acoustic echo cancellation) is truly essential with respect to the quality of multimedia transmission. In this paper, we designed and developed an efficient AEC based on adaptive filters to improve quality of service in telecommunications against the phenomena of acoustic echo, which is indeed a problem in hands-free communications. The main advant...

On integrating acoustic echo and noise cancellation systems for hands-free telephony

An integrated acoustic echo and noise cancellation system for hands-free telephony is presented. The proposed system includes a new residual echo cancellation scheme based on spectral analysis and a new double-talk detector suitable for real-time implementation. Residual echo is whitened via AR analysis during no near-end-talk period and is cancelled by noise reduction. Removing speech characte...

A system for speech enhancement in the context of hands-free radiotelephony with combined noise reduction and acoustic echo cancellation

This paper addresses typical problems encountered with hands-free equipment in the context of GSM radiotelephony. We first summarise some important characteristics of the noise field in moving vehicles, and we also describe the acoustical echo phenomenon. We show that, in order to provide sufficiently high speech quality, these hands-free equipments should include noise reduction (NR) and acous...