公开(公告)号：US20220014864A1

公开(公告)日：2022-01-13

申请号：US17292375

申请日：2019-11-06

Applicant: Sony Group Corporation

Inventor： Yukara Ikemiya

IPC: H04S7/00 ,  H04R3/12

Abstract: The present technology relates to a signal processing apparatus, a signal processing method, and a program that make it possible to reduce an amount of computation for wavefront synthesis.
The signal processing apparatus includes a reproduction speaker selection section. According to a position of a virtual sound source and a range of a listening area, the reproduction speaker selection section selects, from a plurality of speakers included in a speaker array, a plurality of reproduction speakers to be used for reproducing a sound based on an audio signal of the virtual sound source. The present technology can apply to the signal processing apparatus.

公开(公告)号：US12035128B2

公开(公告)日：2024-07-09

申请号：US17782095

申请日：2020-12-02

Applicant: SONY GROUP CORPORATION

Inventor： Keiichi Osako ,  Yuhki Mitsufuji ,  Masafumi Takahashi ,  Yukara Ikemiya

IPC: H04S7/00 ,  G10K15/08 ,  H04R3/12

CPC classification number: H04S7/305 ,  G10K15/08 ,  H04R3/12 ,  H04S7/303

Abstract: Provided is a signal processing device including: a reverberation sound signal generation unit that generates a reverberation sound signal according to a sound source position of a virtual sound source and a distance to a reference point; and a drive signal generation unit that generates a drive signal for a speaker array by a wavefront synthesis filter, in which the drive signal generation unit generates the drive signal on the basis of a signal obtained by performing wavefront synthesis filtering processing on a signal obtained by convolving the reverberation sound signal with a signal of the virtual sound source and/or a signal obtained by performing wavefront synthesis filtering processing on the reverberation sound signal to make the reverberation sound signal into a virtual sound source.