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Echo Suppression for Loudspeaker-Microphone System Measurements

The problem of loudspeaker-microphone (LM) system measurements in reverberantenvironments where the impulse response under investigation is corrupted by unknown echoes is examines. A new approach based on pole-zero modeling of the LM system is presented and compared to traditional methods such as time-delay spectrometry and cepstral deconvolution. It is shown that the new method leads to higher resolution in the frequency domain when the system transfer function exhibits sharp peaks or valleys.

JAES Volume 41 Issue 3 pp. 143-153; March 1993
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