| Paper ID | SAM-5.1 |
| Paper Title |
ROBUST STEERABLE DIFFERENTIAL BEAMFORMERS WITH NULL CONSTRAINTS FOR CONCENTRIC CIRCULAR MICROPHONE ARRAYS |
| Authors |
Xuehan Wang, Northwestern Polytechnical University, China; Gongping Huang, Israel Cohen, Technion - Israel Institute of Technology, Israel; Jacob Benesty, INRS-EMT, University of Quebec, Canada; Jingdong Chen, Northwestern Polytechnical University, China |
| Session | SAM-5: Microphone Array Signal Processing |
| Location | Gather.Town |
| Session Time: | Thursday, 10 June, 14:00 - 14:45 |
| Presentation Time: | Thursday, 10 June, 14:00 - 14:45 |
| Presentation |
Poster
|
| Topic |
Sensor Array and Multichannel Signal Processing: [SAM-MAPR] Microphone array processing |
| IEEE Xplore Open Preview |
Click here to view in IEEE Xplore |
| Virtual Presentation |
Click here to watch in the Virtual Conference |
| Abstract |
Differential beamformers with concentric circular microphone arrays (CCMAs) are desirable for use in various applications since they can form frequency-invariant spatial responses, have better beam steering flexibility than linear arrays, and suffer less with beampattern irregularity and white noise amplification than circular microphone arrays (CMAs). The methods developed previously for differential beamforming with CCMAs are based on the series expansion. Such methods need to know the analytic form of the target beampattern, which may not be accessible in practice. Furthermore, expansion error may lead to erroneous solution, which can cause noise amplification instead of reduction. In this paper, we extend our recently developed beamforming method for CMAs to the design of differential beamformers with CCMAs, which takes advantage of the symmetric null constraints from the beampattern. Simulations are performed to justify the properties of the proposed approach. |
