TY - GEN
T1 - Study and Design of Robust Personal Sound Zones with VAST using Low Rank RIRs
AU - Bhattacharjee, Sankha Subhra
AU - Shi, Liming
AU - Ping, Guoli
AU - Shen, Xiaoxiang
AU - Christensen, Mads Græsbøll
PY - 2023/5
Y1 - 2023/5
N2 - The performance of sound zone control algorithms are known to degrade significantly with changes in acoustic conditions including perturbations of control microphones' positions. In this work, we study the feasibility and effectiveness of using low rank approximations of RIRs to calculate sound zone control filters, to improve the robustness of sound zone control algorithms to perturbations in the bright zone (BZ) microphones. For algorithm design, we consider the framework of variable span linear filter (VSLF) which allows a wide range of user selectivity between acoustic contrast (AC) and signal distortion (SD) trade off, including acoustic contrast control (ACC) and pressure matching (PM) methods as special cases. Detailed simulation study shows that above a certain rank of the variable span trade-off (VAST) filter, the proposed approach using low rank RIRs to derive the control filters provides higher AC compared to using full rank RIRs, when there are perturbations in BZ microphone positions.
AB - The performance of sound zone control algorithms are known to degrade significantly with changes in acoustic conditions including perturbations of control microphones' positions. In this work, we study the feasibility and effectiveness of using low rank approximations of RIRs to calculate sound zone control filters, to improve the robustness of sound zone control algorithms to perturbations in the bright zone (BZ) microphones. For algorithm design, we consider the framework of variable span linear filter (VSLF) which allows a wide range of user selectivity between acoustic contrast (AC) and signal distortion (SD) trade off, including acoustic contrast control (ACC) and pressure matching (PM) methods as special cases. Detailed simulation study shows that above a certain rank of the variable span trade-off (VAST) filter, the proposed approach using low rank RIRs to derive the control filters provides higher AC compared to using full rank RIRs, when there are perturbations in BZ microphone positions.
KW - Sound zone control
KW - robust sound field reproduction
KW - VAST
KW - room impulse response
KW - sound zone
KW - Low rank approximation
UR - http://www.scopus.com/inward/record.url?scp=85177553111&partnerID=8YFLogxK
U2 - 10.1109/ICASSP49357.2023.10094661
DO - 10.1109/ICASSP49357.2023.10094661
M3 - Article in proceeding
SN - 978-1-7281-6328-4
T3 - I E E E International Conference on Acoustics, Speech and Signal Processing. Proceedings
BT - ICASSP 2023 - 2023 IEEE International Conference on Acoustics, Speech and Signal Processing, Proceedings
PB - IEEE Signal Processing Society
T2 - 2023 IEEE International Conference on Acoustics, Speech and Signal Processing Workshops, ICASSPW 2023
Y2 - 4 June 2023 through 10 June 2023
ER -