Accurate Acoustic Echo Reduction with Residual Echo Power Estimation for Long Reverberation

Fukui M, Shimauchi S, Hioka Y, Ohmuro H, Haneda Y. Accurate Acoustic Echo Reduction with Residual Echo Power Estimation for Long Reverberation. In: AES Convention 134. Audio Engineering Society; 2013. Paper 8891. Available from: https://aes.org/publications/elibrary-page/?id=16791

@inproceedings{Fukui2013_16791,
  author = {Fukui, Masahiro and Shimauchi, Suehiro and Hioka, Yusuki and Ohmuro, Hitoshi and Haneda, Yoichi},
  title = {{Accurate Acoustic Echo Reduction with Residual Echo Power Estimation for Long Reverberation}},
  booktitle = {AES Convention 134},
  note = {Paper 8891},
  year = {2013},
  month = may,
  publisher = {Audio Engineering Society},
  url = {https://aes.org/publications/elibrary-page/?id=16791}
}

TY  - CPAPER
TI  - Accurate Acoustic Echo Reduction with Residual Echo Power Estimation for Long Reverberation
AU  - Fukui, Masahiro
AU  - Shimauchi, Suehiro
AU  - Hioka, Yusuki
AU  - Ohmuro, Hitoshi
AU  - Haneda, Yoichi
T2  - AES Convention 134
M1  - Paper 8891
PY  - 2013
DA  - 2013/05/06
UR  - https://aes.org/publications/elibrary-page/?id=16791
PB  - Audio Engineering Society
LA  - en
AB  - This paper deals with the problem of estimating and reducing residual echo components that result from reverberant components beyond the length of FFT block. The residual echo reduction process suppresses the residual echo by applying a multiplicative gain calculated from the estimated echo power spectrum. However, the estimated power spectrum reproduces only a fraction of the echo-path impulse response and so all the reverberant component are not considered. To address this problem we introduce a finite nonnegative convolution method by which each segment of echo-impulse response is convoluted with a received signal in a power spectral domain. With the proposed method, the power spectra of each segment of echo-impulse response are collectively estimated by solving the least-mean-squares problem between the microphone and the estimated-residual-echo power spectra. The performance of this method was demonstrated by simulation results in which speech distortions were decreased compared with the conventional method.
ER  -