Patent ID: 11956590
Assignee: nan
Field: Audio-visual technology (Electrical engineering)
Classification: CPC H | IPC H

Claim 17:
18. A non-transitory machine-readable storage medium storing instructions which, when executed, cause a processing device to:
specify a target directivity factor (DF) value for a differential microphone array (DMA) with a number M of microphones;
generate an N order beampattern for the DMA, wherein N is an integer and a first DF value corresponding to the N order beampattern is greater than the target DF value;
generate an N−1 order beampattern for the DMA, wherein a second DF value corresponding to the N−1 order beampattern is smaller than the target DF value; and
generate a fractional order beampattern for the DMA, wherein a third DF value corresponding to the fractional order beampattern matches the target DF value and the fractional order beampattern comprises a first fractional contribution from the N order beampattern and a second fractional contribution from the N−1 order beampattern.