Title :
A new design method for broadband microphone arrays for speech input in automobiles
Author :
Ka Fai Cedric Yiu;N. Grbic; Kok-Lay Teo;S. Nordholm
Author_Institution :
Dept. of Appl. Math., Hong Kong Polytech. Univ., China
Abstract :
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.
Keywords :
"Microphone arrays","Design methodology","Automobiles","Finite impulse response filter","Calibration","Signal design","Speech enhancement","Noise cancellation","Echo cancellers","Interference"
Journal_Title :
IEEE Signal Processing Letters
DOI :
10.1109/LSP.2002.802109
