TY - GEN
T1 - Frequency-invariant differential microphone array design in the STFT domain
AU - Fu, Zhong Hua
AU - Xie, Lei
AU - Li, Peng
AU - Liang, Jiaen
N1 - Publisher Copyright:
© 2017 IEEE.
PY - 2017/7/2
Y1 - 2017/7/2
N2 - Differential microphone array (DMA) designed in the STFT domain has attracted many researches efforts recently for its flexibility and small size. Theoretically, a DMA can achieve a frequency invariant beampattern that is very helpful for many applications. But in practice, the mismatch between the designed beampattern and the ideal DMA pattern is out of control. In this paper, we propose a new measure on the beampattern misalignment, and deduce a convex solution based on constrained least square (CLS) and second-order cone (SOC) optimization. It is verified that the CLS method can provide almost ideal DMA pattern with controllable white noise gain (WNG). We also show that with more microphones, the overall system performance can be further improved.
AB - Differential microphone array (DMA) designed in the STFT domain has attracted many researches efforts recently for its flexibility and small size. Theoretically, a DMA can achieve a frequency invariant beampattern that is very helpful for many applications. But in practice, the mismatch between the designed beampattern and the ideal DMA pattern is out of control. In this paper, we propose a new measure on the beampattern misalignment, and deduce a convex solution based on constrained least square (CLS) and second-order cone (SOC) optimization. It is verified that the CLS method can provide almost ideal DMA pattern with controllable white noise gain (WNG). We also show that with more microphones, the overall system performance can be further improved.
UR - https://www.scopus.com/pages/publications/85050496329
U2 - 10.1109/APSIPA.2017.8282305
DO - 10.1109/APSIPA.2017.8282305
M3 - 会议稿件
AN - SCOPUS:85050496329
T3 - Proceedings - 9th Asia-Pacific Signal and Information Processing Association Annual Summit and Conference, APSIPA ASC 2017
SP - 1692
EP - 1695
BT - Proceedings - 9th Asia-Pacific Signal and Information Processing Association Annual Summit and Conference, APSIPA ASC 2017
PB - Institute of Electrical and Electronics Engineers Inc.
T2 - 9th Asia-Pacific Signal and Information Processing Association Annual Summit and Conference, APSIPA ASC 2017
Y2 - 12 December 2017 through 15 December 2017
ER -