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公开(公告)号：US11615776B2
公开(公告)日：2023-03-28
申请号：US17166347
申请日：2021-02-03
申请人： YAMAHA CORPORATION
发明人： Takayuki Watanabe , Dai Hashimoto
摘要： 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.
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公开(公告)号：US11805385B2
公开(公告)日：2023-10-31
申请号：US17696358
申请日：2022-03-16
申请人： YAMAHA CORPORATION
IPC分类号： H04S7/00
CPC分类号： H04S7/305 , H04S7/302 , H04S2400/15 , H04S2420/01
摘要： 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.
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公开(公告)号：US11805384B2
公开(公告)日：2023-10-31
申请号：US17696191
申请日：2022-03-16
申请人： YAMAHA CORPORATION
CPC分类号： H04S7/305 , H04S7/307 , H04S1/007 , H04S2400/13
摘要： 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.
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公开(公告)号：US11900913B2
公开(公告)日：2024-02-13
申请号：US17946327
申请日：2022-09-16
申请人： YAMAHA CORPORATION
发明人： Takayuki Watanabe , Dai Hashimoto
CPC分类号： G10K15/10 , H04R1/403 , H04R1/406 , H04R3/005 , H04R3/12 , H04R29/002 , H04R2430/01
摘要： 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.
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公开(公告)号：US11482206B2
公开(公告)日：2022-10-25
申请号：US17166226
申请日：2021-02-03
申请人： YAMAHA CORPORATION
发明人： Takayuki Watanabe , Dai Hashimoto
摘要： 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.
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公开(公告)号：US11895485B2
公开(公告)日：2024-02-06
申请号：US18061687
申请日：2022-12-05
申请人： YAMAHA CORPORATION
发明人： Takayuki Watanabe , Dai Hashimoto
CPC分类号： H04S7/305 , H04R5/04 , H04S2400/01 , H04S2420/01
摘要： 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.
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公开(公告)号：US11749254B2
公开(公告)日：2023-09-05
申请号：US17329291
申请日：2021-05-25
申请人： YAMAHA CORPORATION
发明人： Dai Hashimoto , Takayuki Watanabe
CPC分类号： G10K15/12 , G10L25/51 , H04R3/12 , H04R29/002 , H04R2430/01 , H04S7/305
摘要： The sound signal processing method includes obtaining a sound signal of a sound source, convolving, according to a location of the sound source an impulse response of an early reflection sound with the sound signal to generate an early reflection sound control signal that reproduces an early reflection sound, and convolving an impulse response of a reverberant sound with the sound signal to generate a reverberant sound control signal that reproduces a reverberant sound.
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公开(公告)号：US11917393B2
公开(公告)日：2024-02-27
申请号：US17695907
申请日：2022-03-16
申请人： YAMAHA CORPORATION
CPC分类号： H04S7/303 , H04R3/12 , H04S7/301 , H04S2400/01 , H04S2420/01
摘要： 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.
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公开(公告)号：US11895484B2
公开(公告)日：2024-02-06
申请号：US17696108
申请日：2022-03-16
申请人： YAMAHA CORPORATION
IPC分类号： H04S7/00
CPC分类号： H04S7/305 , H04S7/302 , H04S2400/15 , H04S2420/01
摘要： 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.
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公开(公告)号：US11659344B2
公开(公告)日：2023-05-23
申请号：US17329262
申请日：2021-05-25
申请人： YAMAHA CORPORATION
发明人： Dai Hashimoto , Takayuki Watanabe
CPC分类号： H04R29/004 , H04R1/222
摘要： 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.
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