TY - GEN
T1 - A general approach to the design and implementation of linear differential microphone arrays
AU - Chen, Jingdong
AU - Benesty, Jacob
PY - 2013
Y1 - 2013
N2 - The design of differential microphone arrays (DMAs) and the associated beamforming algorithms have become very important problems. Traditionally, an Nth order DMA is formed by subtractively combining the outputs of two DMAs of order N-1. This method, though simple and easy to implement, suffers from a number of limitations. For example, it is difficult to design the equalization filter that is needed for compensating the array's non-uniform frequency response, particularly for high-order DMAs. In this paper, we propose a new approach to the design and implementation of linear DMAs for speech enhancement. Unlike the traditional method that works in the time domain, this proposed approach works in the short-time Fourier transform (STFT) domain. The core issue with this framework is how to design the desired differential beamformer in each subband, which is accomplished by solving a linear system consisting of N +1 fundamental constraints for an Nth-order DMA.
AB - The design of differential microphone arrays (DMAs) and the associated beamforming algorithms have become very important problems. Traditionally, an Nth order DMA is formed by subtractively combining the outputs of two DMAs of order N-1. This method, though simple and easy to implement, suffers from a number of limitations. For example, it is difficult to design the equalization filter that is needed for compensating the array's non-uniform frequency response, particularly for high-order DMAs. In this paper, we propose a new approach to the design and implementation of linear DMAs for speech enhancement. Unlike the traditional method that works in the time domain, this proposed approach works in the short-time Fourier transform (STFT) domain. The core issue with this framework is how to design the desired differential beamformer in each subband, which is accomplished by solving a linear system consisting of N +1 fundamental constraints for an Nth-order DMA.
KW - differential beamforming
KW - Differential microphone arrays
KW - directivity pattern
UR - http://www.scopus.com/inward/record.url?scp=84893337148&partnerID=8YFLogxK
U2 - 10.1109/APSIPA.2013.6694113
DO - 10.1109/APSIPA.2013.6694113
M3 - 会议稿件
AN - SCOPUS:84893337148
SN - 9789869000604
T3 - 2013 Asia-Pacific Signal and Information Processing Association Annual Summit and Conference, APSIPA 2013
BT - 2013 Asia-Pacific Signal and Information Processing Association Annual Summit and Conference, APSIPA 2013
T2 - 2013 Asia-Pacific Signal and Information Processing Association Annual Summit and Conference, APSIPA 2013
Y2 - 29 October 2013 through 1 November 2013
ER -