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    Signal processing apparatus and signal processing method
    1.
    发明授权
    Signal processing apparatus and signal processing method 有权

    公开(公告)号：US11109143B2

    公开(公告)日：2021-08-31

    申请号：US16440084

    申请日：2019-06-13

    申请人： SONY CORPORATION

    发明人： Yasunobu Murata ,  Kohei Asada ,  Yushi Yamabe

    IPC分类号： G06F17/00 ,  H04R1/10 ,  G10K11/178

    摘要： Disclosed is a signal processing apparatus including a surrounding sound signal acquisition unit, a NC (Noise Canceling) signal generation part, a cooped-up feeling elimination signal generation part, and an addition part. The surrounding sound signal acquisition unit is configured to collect a surrounding sound to generate a surrounding sound signal. The NC signal generation part is configured to generate a noise canceling signal from the surrounding sound signal. The cooped-up feeling elimination signal generation part is configured to generate a cooped-up feeling elimination signal from the surrounding sound signal. The addition part is configured to add together the generated noise canceling signal and the cooped-up feeling elimination signal at a prescribed ratio.

    SOUND PROCESSING DEVICE, SOUND PROCESSING METHOD, AND COMPUTER PROGRAM
    2.
    发明申请
    SOUND PROCESSING DEVICE, SOUND PROCESSING METHOD, AND COMPUTER PROGRAM 审中-公开

    公开(公告)号：US20190266991A1

    公开(公告)日：2019-08-29

    申请号：US16307623

    申请日：2017-04-18

    申请人： Sony Corporation

    发明人： Shigetoshi Hayashi ,  Kohei Asada ,  Tetsunori Itabashi ,  Kazuma Yoshii ,  Mitsuhiro Suzuki ,  Shinpei Tsuchiya ,  Yushi Yamabe

    IPC分类号： G10K11/178 ,  H04R1/10

    摘要： [Object] To provide a sound processing device capable of effectively reducing ambient noise at low cost.[Solution] Provided is a sound processing device including: a first sound collector configured to collect a first noise signal from a noise source of noise leaking into a casing mounted to a user's ear; a first signal processing unit configured to form a first noise reduction signal used to reduce noise at a cancellation point on the basis of the first noise signal; a second signal processing unit configured to form a second noise reduction signal used to reduce noise at a cancellation point with respect to a first pseudo noise signal; an adder configured to add the first noise reduction signal and the second noise reduction signal; and a sound emitter configured to emit an output of the adder into the casing as sound. The first pseudo noise signal is a signal obtained by subtracting an output of the adder applied with a simulation transfer characteristic from an output of the first sound collector, the simulation transfer characteristic being obtained by simulating a transfer characteristic from the sound emitter to the first sound collector.

    Signal processing device, signal processing method, and program
    5.
    发明授权
    Signal processing device, signal processing method, and program 有权

    公开(公告)号：US10667034B2

    公开(公告)日：2020-05-26

    申请号：US16354710

    申请日：2019-03-15

    申请人： Sony Corporation

    发明人： Kohei Asada ,  Yushi Yamabe ,  Shigetoshi Hayashi

    IPC分类号： H04R1/10 ,  G10K11/178 ,  H04R1/22 ,  G10L21/0208 ,  H04R3/04

    摘要： [Object] To allow a listener to listen to ambient sounds of the external environment in an appropriate manner while wearing a head mounted acoustic device.[Solution] Provided is a signal processing device including a first acquiring unit configured to acquire a sound collection result for a first sound propagating in an external space, a second acquiring unit configured to acquire a sound collection result for a second sound propagating in an internal space, a first filter processing unit configured to generate a difference signal which is substantially equal to a difference between the first sound propagating directly from the external space toward the inside of the external ear canal and the first sound propagating from the external space to the internal space via the mounting unit on the basis of the sound collection result for the first sound, a subtracting unit configured to generate a subtraction signal obtained by subtracting a first signal component based on the sound collection result for the first sound and a second signal component based on an input acoustic signal from the sound collection result for the second sound, a second filter processing unit configured to generate a noise reduction signal based on the subtraction signal, and an adding unit configured to add the difference signal and the noise reduction signal to the input acoustic signal and generate a drive signal.

    SIGNAL PROCESSING DEVICE, SIGNAL PROCESSING METHOD, AND PROGRAM
    6.
    发明申请
    SIGNAL PROCESSING DEVICE, SIGNAL PROCESSING METHOD, AND PROGRAM 审中-公开

    公开(公告)号：US20190215598A1

    公开(公告)日：2019-07-11

    申请号：US16354710

    申请日：2019-03-15

    申请人： Sony Corporation

    发明人： Kohei Asada ,  Yushi Yamabe ,  Shigetoshi Hayashi

    IPC分类号： H04R1/10 ,  H04R1/22 ,  G10K11/178 ,  H04R3/04 ,  G10L21/0208

    摘要： [Object] To allow a listener to listen to ambient sounds of the external environment in an appropriate manner while wearing a head mounted acoustic device.[Solution] Provided is a signal processing device including a first acquiring unit configured to acquire a sound collection result for a first sound propagating in an external space, a second acquiring unit configured to acquire a sound collection result for a second sound propagating in an internal space, a first filter processing unit configured to generate a difference signal which is substantially equal to a difference between the first sound propagating directly from the external space toward the inside of the external ear canal and the first sound propagating from the external space to the internal space via the mounting unit on the basis of the sound collection result for the first sound, a subtracting unit configured to generate a subtraction signal obtained by subtracting a first signal component based on the sound collection result for the first sound and a second signal component based on an input acoustic signal from the sound collection result for the second sound, a second filter processing unit configured to generate a noise reduction signal based on the subtraction signal, and an adding unit configured to add the difference signal and the noise reduction signal to the input acoustic signal and generate a drive signal.

    Signal processing device, signal processing method, and program
    8.
    发明授权
    Signal processing device, signal processing method, and program 有权

    公开(公告)号：US11030988B2

    公开(公告)日：2021-06-08

    申请号：US16335712

    申请日：2017-06-30

    申请人： Sony Corporation

    发明人： Yushi Yamabe ,  Kyosuke Matsumoto ,  Kohei Asada

    IPC分类号： G10K11/178 ,  H03G3/30 ,  G10L21/0208 ,  G10L21/0224 ,  G10L21/0232

    摘要： [Object] To shorten a time until an effect is obtained after start of an adaptive process mode on an ambient sound.
    [Solution] Provided is a signal processing device including: a noise cancellation processing unit configured to generate a noise cancellation signal on the basis of a collected ambient sound; a signal processing unit configured to generate an ambient sound adapted signal by performing dynamic analysis related to a feature of the ambient sound and filtering the ambient sound; and a control unit configured to control a plurality of modes related to signal processing. The plurality of modes includes a first mode in which acoustic reproduction based on the noise cancellation signal is performed and a second mode in which acoustic reproduction based on the noise cancellation signal and the ambient sound adapted signal is performed, and the signal processing unit continues the dynamic analysis even in the first mode.