US 12,323,779 B2
Sound source localization system
Ti-Wen Tang, Tainan (TW); Tzu-Hsu Chen, Tainan (TW); Chin-Kuei Hsu, Tainan (TW); and Ching-Han Chou, Tainan (TW)
Assigned to Himax Technologies Limited, Tainan (TW)
Filed by Himax Technologies Limited, Tainan (TW)
Filed on Jun. 16, 2023, as Appl. No. 18/211,003.
Prior Publication US 2024/0422476 A1, Dec. 19, 2024
Int. Cl. H04R 3/00 (2006.01); G10L 15/02 (2006.01); H04N 5/262 (2006.01); H04R 1/40 (2006.01); H04R 29/00 (2006.01)
CPC H04R 3/005 (2013.01) [G10L 15/02 (2013.01); H04N 5/2628 (2013.01); H04R 1/406 (2013.01); H04R 29/005 (2013.01)] 9 Claims
OG exemplary drawing
 
1. A sound source localization system, comprising:
a microphone array composed of a plurality of microphones each converting sound wave into a corresponding voice signal;
a room shape estimator that determines a room shape including a location map and a corresponding template voice feature map composed of template voice features associated with a virtual sound source disposed at different locations respectively, and outputs a room reliability indicating confidence about the determined room shape;
a lookup table (LUT) that pre-stores the location map and the corresponding template voice feature map; and
a localizer that determines a location of a sound source according to the room reliability and similarity between a voice feature associated with the sound source and the template voice features of the template voice feature map.