| Paper: | AE-P5.2 | ||
| Session: | Acoustic Echo Cancellation and Active Noise Control | ||
| Time: | Friday, May 19, 10:00 - 12:00 | ||
| Presentation: | Poster | ||
| Topic: | Audio and Electroacoustics: Echo Cancellation | ||
| Title: | An Acoustic Echo Suppressor Based on a Frequency-Domain Model of Highly Nonlinear Residual Echo | ||
| Authors: | Osamu Hoshuyama, Akihiko Sugiyama, NEC Corporation, Japan | ||
| Abstract: | This paper proposes a new acoustic echo suppressor based on a frequency-domain model of highly nonlinear residual echo. The proposed echo suppressor controls the gain in each frequency bin based on the new model where the highly nonlinear residual echo is approximated as a product of a correlation coefficient and the echo replica in the frequency domain. To reduce annoying modulation by the error of the model, a flooring operation of estimated near-end signal level is introduced to the gain control. Simulation results with speech data recorded by a hands-free cellphone show that the proposed echo uppressor reduces the highly nonlinear residual echo to an almost inaudible level. | ||
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