Nonlinear Acoustic Echo Suppressor Based on Spectral Correlation between Residual Echo and Echo Replica(Engineering Acoustics)

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概要

• 論文の詳細を見る

• This paper proposes a new echo suppressor based on spectral correlation between the residual echo and the echo replica in an ordinary echo canceller. First, it is revealed by experiments that there is a significant correlation between the spectral amplitudes of the residual echo and the echo replica, and a new model for nonlinear-echo suppression based on the correlation is derived. Next, a new echo suppressor controlling the gain in each frequency bin to suppress the residual echo based on the new model is developed. Simulation results with speech data recorded by a hands-free cellphone show that the proposed echo suppressor reduces the residual echo to an almost inaudible level.

• 社団法人電子情報通信学会の論文
• 2006-11-01

著者

• Sugiyama Akihiko

  Media And Information Research Laboratories Nec Corporation

• Hoshuyama Osamu

  Media And Information Research Laboratories Nec Corporation

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