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A new design method for broadband microphone arrays for speech input in automobiles

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4 Author(s)
Ka Fai Cedric Yiu ; Dept. of Appl. Math., Hong Kong Polytech. Univ., China ; Grbic, Nedelko ; Kok-Lay Teo ; Nordholm, S.

A new design method for broadband microphone arrays is presented. Using sequences of calibration signals, the method is able to design finite-impulse response (FIR) filters with specific performance. The method can control and adjust the speech distortion, noise suppression, and echo cancellation directly. It turns out that a significantly shorter filter length can be applied to achieve better overall performance than the least-squares method or the signal-to-noise plus interference method.

Published in:

Signal Processing Letters, IEEE  (Volume:9 ,  Issue: 7 )