TY - GEN
T1 - A flexible frequency-invariant beampattern synthesis method for concentric circular microphone arrays
AU - Wang, Wenxia
AU - Yan, Shefeng
N1 - Publisher Copyright:
© 2019 IEEE.
PY - 2019/9
Y1 - 2019/9
N2 - This paper studies the broadband frequency-invariant beampattern synthesis problem for concentric circular microphone arrays (CCMAs) and reformulates a recently proposed accurate array response control (A2RC) algorithm in the circular harmonics domain (CHD). The new algorithm is named as CHD-A2RC. CHD-A2RC consists of two stages, the first is the CHD transformation, which is achieved by using the Jacobi-Anger expansion, the second is the accurate and flexible beampattern synthesis, which is inspired by the adaptive array principle. Compared with the existing beamforming approach for CCMAs, CHD-A2RC can design more kinds of beampatterns with low computational burdens. To validate the CHD-A2RC algorithm, two kinds of broadband beampatterns, i.e., the Chebyshev beampattern and the nonuniform sidelobe control beampattern are synthesized in the simulation section. Additionally, the white noise gains (WNGs) are calculated and the comparison of WNGs between the CCMA and the circular microphone array (CMA) validates the robustness of CCMAs on designing the desired beampatterns.
AB - This paper studies the broadband frequency-invariant beampattern synthesis problem for concentric circular microphone arrays (CCMAs) and reformulates a recently proposed accurate array response control (A2RC) algorithm in the circular harmonics domain (CHD). The new algorithm is named as CHD-A2RC. CHD-A2RC consists of two stages, the first is the CHD transformation, which is achieved by using the Jacobi-Anger expansion, the second is the accurate and flexible beampattern synthesis, which is inspired by the adaptive array principle. Compared with the existing beamforming approach for CCMAs, CHD-A2RC can design more kinds of beampatterns with low computational burdens. To validate the CHD-A2RC algorithm, two kinds of broadband beampatterns, i.e., the Chebyshev beampattern and the nonuniform sidelobe control beampattern are synthesized in the simulation section. Additionally, the white noise gains (WNGs) are calculated and the comparison of WNGs between the CCMA and the circular microphone array (CMA) validates the robustness of CCMAs on designing the desired beampatterns.
KW - Accurate array response control
KW - Circular harmonics domain
KW - Concentric circular microphone arrays
KW - Frequency-invariant beampattern
UR - http://www.scopus.com/inward/record.url?scp=85078952340&partnerID=8YFLogxK
U2 - 10.1109/ICSPCC46631.2019.8960726
DO - 10.1109/ICSPCC46631.2019.8960726
M3 - Conference contribution
AN - SCOPUS:85078952340
T3 - 2019 IEEE International Conference on Signal Processing, Communications and Computing, ICSPCC 2019
BT - 2019 IEEE International Conference on Signal Processing, Communications and Computing, ICSPCC 2019
PB - Institute of Electrical and Electronics Engineers Inc.
T2 - 2019 IEEE International Conference on Signal Processing, Communications and Computing, ICSPCC 2019
Y2 - 20 September 2019 through 22 September 2019
ER -
