US 12,267,668 B2
Audio signal processing method, audio signal processing apparatus and a non-transitory computer-readable storage medium storing a program
Takayuki Watanabe, Hamamatsu (JP); Dai Hashimoto, Hamamatsu (JP); and Hiroomi Shidoji, Hamamatsu (JP)
Assigned to YAMAHA CORPORATION, Hamamatsu (JP)
Filed by YAMAHA CORPORATION, Hamamatsu (JP)
Filed on Mar. 16, 2022, as Appl. No. 17/696,293.
Claims priority of application No. 2021-045542 (JP), filed on Mar. 19, 2021.
Prior Publication US 2022/0303715 A1, Sep. 22, 2022
Int. Cl. H04S 7/00 (2006.01); H04R 5/02 (2006.01); H04R 5/04 (2006.01)
CPC H04S 7/308 (2013.01) [H04R 5/02 (2013.01); H04R 5/04 (2013.01); H04S 7/305 (2013.01); H04S 2400/11 (2013.01); H04S 2400/13 (2013.01)] 6 Claims
OG exemplary drawing
 
1. An audio signal processing method comprising:
dividing a virtual sound source representing a reflected sound of a target acoustic space into (i) a first virtual sound source located between a speaker and a sound receiving point, the first virtual sound source representing a first sound source of the reflected sound of the target acoustic space, and (ii) a second virtual sound source located such that the speaker is disposed between the second virtual sound source and the sound receiving point, the second virtual sound source representing a second sound source of the reflected sound of the target acoustic space;
moving, only in a case of the first virtual sound source, a position of the first virtual sound source to a reproducible position based on a position of the speaker; and
setting a gain value and a delay amount to the first virtual sound source according to a difference between a first distance between the speaker and the sound receiving point and a second distance between the first virtual sound source after movement and the sound receiving point.