| Paper: | AE-P5.3 | ||
| 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: | NONLINEAR ACOUSTIC ECHO CANCELLATION USING ORTHOGONAL POLYNOMIAL | ||
| Authors: | Guan-Yu Jiang, Shih-Fu Hsieh, National Chiao Tung University, Taiwan | ||
| Abstract: | In order to compensate the nonlinear distortion in the hands -free telephones or teleconferencing, a memoryless power- series–based polynomial NLMS adaptive filter can be used to cancel nonlinear acoustic echo. Conventional polynomial model employs a power-series expansion. In this paper we propose an orthogonal polynomial adaptive filter to accelerate the convergence rate of the nonlinear adaptive filter. The convergence rates of residual echo power for both power-series and orthogonal polynomials are derived analytically. Computer simulations justify our analysis and show the superior performance of the proposed nonlinear acoustic echo canceller. | ||
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