公开(公告)号：US11615776B2

公开(公告)日：2023-03-28

申请号：US17166347

申请日：2021-02-03

Applicant: YAMAHA CORPORATION

Inventor： Takayuki Watanabe ,  Dai Hashimoto

IPC: G10K15/08 ,  H04R29/00 ,  H04S7/00 ,  H04R3/00 ,  H04S3/00

Abstract: A sound signal processing method includes: receiving a line-inputted sound signal; controlling a volume of the line-inputted sound signal; and generating an early reflected sound control signal using the line-inputted sound signal having the controlled volume.

公开(公告)号：US11805385B2

公开(公告)日：2023-10-31

申请号：US17696358

申请日：2022-03-16

Applicant: YAMAHA CORPORATION

Inventor： Takayuki Watanabe ,  Dai Hashimoto ,  Hiroomi Shidoji

IPC: H04S7/00

CPC classification number: H04S7/305 ,  H04S7/302 ,  H04S2400/15 ,  H04S2420/01

Abstract: An audio signal processing method includes generating an initial reflected sound control signal according to a geometrical shape of a virtual space, generating a reverberant sound control signal using a reflected sound parameter of the virtual space, calculating timing of connection, the timing of connection being a point in time at which a volume of an initial reflected sound reproducible by the initial reflected sound control signal is a same as a volume of a reverberant sound reproducible by the reverberant sound control signal, based on the geometrical shape of the virtual space, and increasing, in a period of time before the timing of connection, a level of the reverberant sound control signal so as to cause the volume of the reverberant sound to be closer to the volume of the reverberant sound at the timing of connection.

公开(公告)号：US11805384B2

公开(公告)日：2023-10-31

申请号：US17696191

申请日：2022-03-16

Applicant: YAMAHA CORPORATION

Inventor： Takayuki Watanabe ,  Dai Hashimoto ,  Hiroomi Shidoji

IPC: H04S7/00 ,  H04S1/00

CPC classification number: H04S7/305 ,  H04S7/307 ,  H04S1/007 ,  H04S2400/13

Abstract: An audio signal processing method includes obtaining an audio signal of a sound source, performing first filter processing on the audio signal to generate an imaginary sound source of a virtual space, performing second filter processing on the audio signal to adjust a tone of the imaginary sound source, and outputting an initial reflected sound control signal generated by using the audio signal on which the first filter processing and the second filter processing have been performed, in a first case where the first filter processing is performed before the second filter processing, the first filter processing is performed on the audio signal, and the second filter processing is performed on the audio signal on which the first filter processing has been performed, and in a second case where the second filter processing is performed before the first filter processing, the second filter processing is performed on the audio signal, and the first filter processing is performed on the audio signal on which the second filter processing has been performed.

公开(公告)号：US11900913B2

公开(公告)日：2024-02-13

申请号：US17946327

申请日：2022-09-16

Applicant: YAMAHA CORPORATION

Inventor： Takayuki Watanabe ,  Dai Hashimoto

IPC: H04R3/00 ,  G10K15/10 ,  H04R1/40 ,  H04R3/12 ,  H04R29/00

CPC classification number: G10K15/10 ,  H04R1/403 ,  H04R1/406 ,  H04R3/005 ,  H04R3/12 ,  H04R29/002 ,  H04R2430/01

Abstract: A sound signal processing method includes: obtaining a plurality of sound signals respectively collected by a plurality of microphones arranged in a space; adjusting respective levels of the plurality of sound signals in accordance with respective positions of the plurality of microphones; mixing the plurality of sound signals having the adjusted respective levels to thereby obtain a mixed signal; and generating a reflected sound by using the obtained mixed signal.

公开(公告)号：US11482206B2

公开(公告)日：2022-10-25

申请号：US17166226

申请日：2021-02-03

Applicant: YAMAHA CORPORATION

Inventor： Takayuki Watanabe ,  Dai Hashimoto

IPC: H04S7/00 ,  G10K15/10 ,  H04R1/40 ,  H04R3/00 ,  H04R3/12 ,  H04R29/00

Abstract: A sound signal processing method includes: obtaining a plurality of sound signals respectively collected by a plurality of microphones arranged in a space; adjusting respective levels of the plurality of sound signals in accordance with respective positions of the plurality of microphones; mixing the plurality of sound signals having the adjusted respective levels to thereby obtain a mixed signal; and generating a reflected sound by using the obtained mixed signal.

公开(公告)号：US11917393B2

公开(公告)日：2024-02-27

申请号：US17695907

申请日：2022-03-16

Applicant: YAMAHA CORPORATION

Inventor： Takayuki Watanabe ,  Dai Hashimoto ,  Hiroomi Shidoji

IPC: H04S7/00 ,  H04R3/12

CPC classification number: H04S7/303 ,  H04R3/12 ,  H04S7/301 ,  H04S2400/01 ,  H04S2420/01

Abstract: A sound field support method for an audio reproducing apparatus for simulating sound emitting from a sound source, the method includes selecting either position information on the sound source to be set in a virtual space or localization information of the sound source, in a case where sound from the sound source is to be simulated sound emitted from a speaker to be set in a target space, generating a first sound signal based on the position information in a state where the selecting has selected the position information, generating a second sound signal based on the localization information in a state where the selecting has selected the localization information, and adjusting sound image localization of an input audio signal from the sound source to be output to the speaker using the first sound signal and the second sound signal.

公开(公告)号：US11895484B2

公开(公告)日：2024-02-06

申请号：US17696108

申请日：2022-03-16

Applicant: YAMAHA CORPORATION

Inventor： Takayuki Watanabe ,  Dai Hashimoto ,  Hiroomi Shidoji

IPC: H04S7/00

CPC classification number: H04S7/305 ,  H04S7/302 ,  H04S2400/15 ,  H04S2420/01

Abstract: An audio signal processing method detects a position, in a sound space, of a sound source that generates an audio signal, the sound space being divisible into a plurality of areas, and generates an initial reflected sound control signal by convolving (i) an impulse response of an initial reflected sound linked to a first area of the sound space, among the plurality of areas of the sound space, corresponding to the detected position of the sound source to (ii) the audio signal of the sound source without convolving (iii) an impulse response of an initial reflected sound linked to any of the plurality of areas of the sound space other than the first area of the sound space corresponding to the detected position of the sound source to (ii) the audio signal of the sound source.

公开(公告)号：US11659344B2

公开(公告)日：2023-05-23

申请号：US17329262

申请日：2021-05-25

Applicant: YAMAHA CORPORATION

Inventor： Dai Hashimoto ,  Takayuki Watanabe

IPC: H04R29/00 ,  H04R1/22

CPC classification number: H04R29/004 ,  H04R1/222

Abstract: A sound signal processing method includes receiving a sound signal, generating an early reflection sound control signal that reproduces an early reflection sound and a reverberant sound control signal that reproduces a reverberant sound from the sound signal, controlling a volume of the sound signal and distributing the sound signal to generate a direct sound control signal, and mixing the direct sound control signal, the early reflection sound control signal that reproduces a direct sound, and the reverberant sound control signal to generate an output signal.

公开(公告)号：US11546717B2

公开(公告)日：2023-01-03

申请号：US17166180

申请日：2021-02-03

Applicant: YAMAHA CORPORATION

Inventor： Takayuki Watanabe ,  Dai Hashimoto

IPC: H04S7/00 ,  H04R5/04

Abstract: A sound signal processing method includes: obtaining a sound signal; obtaining impulse response data that was measured in a predetermined space before the sound signal is obtained; generating an early reflected sound control signal not including a reverberant sound by convolving impulse response data of an early reflected sound among the obtained impulse response data into the obtained sound signal.

公开(公告)号：US12267668B2

公开(公告)日：2025-04-01

申请号：US17696293

申请日：2022-03-16

Applicant: YAMAHA CORPORATION

Inventor： Takayuki Watanabe ,  Dai Hashimoto ,  Hiroomi Shidoji

IPC: H04S7/00 ,  H04R5/02 ,  H04R5/04

Abstract: An audio signal processing method includes dividing a virtual sound source representing a reflected sound of a target acoustic space into (i) a first virtual sound source located between a position of a speaker and a position of 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, and, only in a case of the first virtual sound source, moving a position of the first virtual sound source to a reproducible position based on a position of the speaker.