A residual echo cancellation scheme for hands-free telephony

Seon Joon Park; Chungyong Lee; Dae Hee Youn

doi:10.1109/LSP.2002.806053

A residual echo cancellation scheme for hands-free telephony

Seon Joon Park, Chungyong Lee, Dae Hee Youn

Department of Electrical and Electronic Engineering

Research output: Contribution to journal › Letter › peer-review

9 Citations (Scopus)

Abstract

A residual echo cancellation scheme based on the autoregressive (AR) analysis is proposed for hands-free telephony. Residual echo is whitened by the inverse filter using the estimated AR coefficients. Removing speech characteristics of the residual echo signal, the noise reduction system successfully reduces the power of residual echo as well as that of ambient noise. In a car cabin, the proposed method improved echo return loss enhancement by 8.7 ∼ 9.9 dB as compared with the conventional combined system.

Original language	English
Pages (from-to)	397-399
Number of pages	3
Journal	IEEE Signal Processing Letters
Volume	9
Issue number	12
DOIs	https://doi.org/10.1109/LSP.2002.806053
Publication status	Published - 2002 Dec

All Science Journal Classification (ASJC) codes

Signal Processing
Electrical and Electronic Engineering
Applied Mathematics

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10.1109/LSP.2002.806053

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abstract = "A residual echo cancellation scheme based on the autoregressive (AR) analysis is proposed for hands-free telephony. Residual echo is whitened by the inverse filter using the estimated AR coefficients. Removing speech characteristics of the residual echo signal, the noise reduction system successfully reduces the power of residual echo as well as that of ambient noise. In a car cabin, the proposed method improved echo return loss enhancement by 8.7 ∼ 9.9 dB as compared with the conventional combined system.",

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AB - A residual echo cancellation scheme based on the autoregressive (AR) analysis is proposed for hands-free telephony. Residual echo is whitened by the inverse filter using the estimated AR coefficients. Removing speech characteristics of the residual echo signal, the noise reduction system successfully reduces the power of residual echo as well as that of ambient noise. In a car cabin, the proposed method improved echo return loss enhancement by 8.7 ∼ 9.9 dB as compared with the conventional combined system.

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A residual echo cancellation scheme for hands-free telephony

Abstract

All Science Journal Classification (ASJC) codes

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