Implementation and evaluation of an acoustic echo canceller using duo-filter control system

Yoichi Haneda*, Shoji Makino, Junji Kojima, Suehiro Shimauchi

*Corresponding author for this work

Research output: Contribution to journalConference articlepeer-review

Abstract

The developed acoustic echo canceller uses an exponentially weighted step-size projection algorithm and a duo-filter control system to achieve fast convergence and high speech quality. The duo-filter control system has an adaptive filter and a fixed filter, and uses variable-loss insertion. Evaluation of this system with multi-channel A/D and D/A converters showed that (1) the convergence speed is under 1.5 seconds for speech input when the adaptive filter length is 125 ms, (2) the residual echo level is nearly as low as the ambient noise level (average: Under -20 dB; maximum: Under -35 dB), and (3) near-end speech is sent with no disturbance during double talk.

Original languageEnglish
JournalEuropean Signal Processing Conference
Publication statusPublished - 2015
Externally publishedYes
Event8th European Signal Processing Conference, EUSIPCO 1996 - Trieste, Italy
Duration: 1996 Sep 101996 Sep 13

ASJC Scopus subject areas

  • Signal Processing
  • Electrical and Electronic Engineering

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