| Presentation | 1997/4/18 A Stereo Echo Canceler with Correct Echo-Path Identification Yann JONCOUR, Akihiko SUGIYAMA, |
|---|---|
| PDF Download Page | PDF download Page Link |
| Abstract(in Japanese) | (See Japanese page) |
| Abstract(in English) | A new stereo echo canceler which provides a strict identification of the echo path impulse responses is proposed. A switching circuit and a lowpass filter with time-varying coefficients are implemented in one of the two channels. By this pre-processing of the input signals, a sufficient number of equations derived from the condition for echo cancellation is obtained. The common solution to these equations is unique and implies the convergence of filter coefficients to the samples of the echo path impulse response. Signal distortion is limited by selecting appropriate switching frequency and lowpass-filter coefficients. The convergence of filter coefficients is confirmed by simulation results. Subjective listening tests show that the processed signals are scored 0.5 lower than the original input signals, using the CCIR five-grade impairment scale. The proposed structure is robust since ERLE is not degraded by acoustic changes in the remote room. |
| Keyword(in Japanese) | (See Japanese page) |
| Keyword(in English) | adaptive filtering / stereo echo canceler / echo-path identification / switching circuit |
| Paper # | DSP97-1,IE97-1 |
| Date of Issue |
| Conference Information | |
| Committee | IE |
|---|---|
| Conference Date | 1997/4/18(1days) |
| Place (in Japanese) | (See Japanese page) |
| Place (in English) | |
| Topics (in Japanese) | (See Japanese page) |
| Topics (in English) | |
| Chair | |
| Vice Chair | |
| Secretary | |
| Assistant | |
| Paper Information | |
| Registration To | Image Engineering (IE) |
|---|---|
| Language | ENG |
| Title (in Japanese) | (See Japanese page) |
| Sub Title (in Japanese) | (See Japanese page) |
| Title (in English) | A Stereo Echo Canceler with Correct Echo-Path Identification |
| Sub Title (in English) | |
| Keyword(1) | adaptive filtering |
| Keyword(2) | stereo echo canceler |
| Keyword(3) | echo-path identification |
| Keyword(4) | switching circuit |
| 1st Author's Name | Yann JONCOUR |
| 1st Author's Affiliation | Information Technology Research Laboratories, NEC Corporation:On leave from Image and Signal Processing Research Laboratory Rennes University of Sciences, FRANCE() |
| 2nd Author's Name | Akihiko SUGIYAMA |
| 2nd Author's Affiliation | Information Technology Research Laboratories, NEC Corporation |
| Date | 1997/4/18 |
| Paper # | DSP97-1,IE97-1 |
| Volume (vol) | vol.97 |
| Number (no) | 11 |
| Page | pp.pp.- |
| #Pages | 8 |
| Date of Issue | |