US 12,143,782 B2
Microphone system
Hsueh-Ying Lai, Zhubei (TW); Chih-Sheng Chen, Zhubei (TW); Chien-Hua Hsu, Zhubei (TW); Hua-Jun Hong, Zhubei (TW); and Tsung-Liang Chen, Zhubei (TW)
Assigned to BRITISH CAYMAN ISLANDS INTELLIGO TECHNOLOGY INC., Grand Cayman (KY)
Filed by British Cayman Islands Intelligo Technology Inc., Grand Cayman (KY)
Filed on Oct. 26, 2022, as Appl. No. 17/974,323.
Claims priority of provisional application 63/317,078, filed on Mar. 7, 2022.
Prior Publication US 2023/0283951 A1, Sep. 7, 2023
Int. Cl. H04R 3/00 (2006.01); H04R 1/40 (2006.01)
CPC H04R 3/005 (2013.01) [H04R 1/406 (2013.01); H04R 2201/401 (2013.01)] 15 Claims
OG exemplary drawing
 
1. A microphone system, comprising:
a microphone array comprising Q microphones that detect sound and generate Q audio signals; and
a processing unit configured to perform a set of operations comprising:
performing spatial filtering over the Q audio signals using a trained model based on at least one target beam area (TBA) and coordinates of the Q microphones to generate a beamformed output signal originated from ω target sound sources inside the at least one TBA, where ω>=0;
wherein each TBA is defined by r time delay ranges for r combinations of two microphones out of the Q microphones, where Q>=3 and r>=1; and
wherein a dimension of a first number for locations of all sound sources able to be distinguished by the processing unit increases as a dimension of a second number for a geometry formed by the Q microphones increases.