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| Publication: A.N. Birkett and R.A. Goubran, "Nonlinear Loudspeaker Compensation for Hands Free Acoustic Echo Cancellation", IEE Electronics Letters, Vol. 32, No. 12, p. 1063, June 1996. |
| Abstract: Loudspeaker nonlinearity at high volumes limits the achievable echo cancellation performance in linear acoustic echo cancellers. A new non linear adaptive filter for improving the echo cancellation performance at high volumes for hands free telephones is proposed. Experimental measurements show that an echo cancellation improvement of > 8dB can be obtained at high volumes as compared to a linear adaptive filter. |