公开(公告)号：US11543521B2

公开(公告)日：2023-01-03

申请号：US16482626

申请日：2017-12-07

Applicant: SONY CORPORATION

Inventor： Keiichi Osako ,  Kohei Asada ,  Tetsunori Itabashi ,  Kazuma Yoshii ,  Kenichi Makino ,  Yasunobu Murata ,  Shigetoshi Hayashi

IPC: G01S15/52 ,  G01S7/52 ,  G01S7/539 ,  G01S15/58

Abstract: To provide a mechanism for selectively taking an external sound from an appropriate sound source into an internal space of a moving object. An information processing apparatus including an acquisition unit configured to acquire an audio signal from a sound source existing outside a moving object, a generation unit configured to generate an audio signal from a target sound source at a distance from the moving object, the distance being a distance according to a speed of the moving object, of the sound sources, on the basis of the audio signal acquired by the acquisition unit, and an output control unit configured to output the audio signal generated by the generation unit toward an internal space of the moving object.

公开(公告)号：US20200043459A1

公开(公告)日：2020-02-06

申请号：US16340764

申请日：2017-07-26

Applicant: Sony Corporation

Inventor： Tetsunori Itabashi ,  Kohei Asada ,  Shigetoshi Hayashi ,  Kenichi Makino ,  Kazuma Yoshii

IPC: G10K11/178 ,  H04R1/10 ,  G10L21/0208

Abstract: [Object] To provide a structure that can effectively reduce a noise containing a component varying in characteristic.[Solution] A signal processing apparatus including: a signal processing section configured to generate a first noise reduction signal using an adaptive filter on the basis of a signal output from a first input apparatus, and cause the generated first noise reduction signal to be output by a first output apparatus, and generate a second noise reduction signal using a fixed filter on the basis of a signal output from a second input apparatus, and cause the generated second noise reduction signal to be output by a second output apparatus.

公开(公告)号：US10255899B2

公开(公告)日：2019-04-09

申请号：US15506858

申请日：2015-09-04

Applicant: SONY CORPORATION

Inventor： Tetsunori Itabashi ,  Kohei Asada ,  Keiichi Osako ,  Shigetoshi Hayashi

IPC: G10K11/178 ,  B60R11/02 ,  H04R5/02 ,  H04M9/08

Abstract: The present disclosure relates to a noise reduction device and a noise reduction method capable of reducing noise in a more stable and effective manner. Signal processing is performed to generate a reference signal representing a waveform of noise. Moreover, signal processing is performed for an error signal representing a waveform of an error measured by a microphone in accordance with an amplitude-frequency characteristic. Then, a filter coefficient with which the error signal becomes zero is calculated under adaptive algorithm with reference to the reference signal. The reference signal is filtered by using the filter coefficient to obtain a control signal. The control signal is supplied to the corresponding one of the predetermined number of output units. The present technology is applicable to a noise cancelling system equipped in a closed space such as an interior of a vehicle, for example.

公开(公告)号：US11290835B2

公开(公告)日：2022-03-29

申请号：US16964121

申请日：2018-11-30

Applicant: Sony Corporation

Inventor： Toru Nakagawa ,  Ryutaro Watanabe ,  Tetsunori Itabashi ,  Shigetoshi Hayashi

IPC: H04S7/00 ,  H04R5/02

Abstract: An acoustic processing apparatus includes an acquisition section that acquires operation position information of a seat apparatus that operates following a movement of a user; and a sound image localization processor that performs sound image localization processing on an audio signal according to the operation position information acquired by the acquisition section, the audio signal being reproduced by a speaker unit provided to the seat apparatus.

公开(公告)号：US11159886B2

公开(公告)日：2021-10-26

申请号：US16959793

申请日：2019-01-10

Applicant: Sony Corporation

Inventor： Shigetoshi Hayashi ,  Ryutaro Watanabe ,  Tetsunori Itabashi ,  Toru Nakagawa ,  Takuma Domae

IPC: H04R5/02 ,  H04R1/02

Abstract: To favorably reduce crosstalk components output from respective speakers that reproduce left and right ear signals.
Directivity is given to a left ear signal and a right ear signal and the left ear signal and the right ear signal are reproduced by using at least two respective speakers arranged back-to-back to reduce crosstalk components. For example, the speaker may be a speaker installed in a headrest or a seat provided with the headrest. For example, the directivity given to the left ear signal and the directivity given to the right ear signal may be bidirectional directivity or unidirectional directivity.

公开(公告)号：US20200374631A1

公开(公告)日：2020-11-26

申请号：US16959793

申请日：2019-01-10

Applicant: Sony Corporation

Inventor： Shigetoshi Hayashi ,  Ryutaro Watanabe ,  Tetsunori Itabashi ,  Toru Nakagawa ,  Takuma Domae

IPC: H04R5/02 ,  H04R1/02

Abstract: To favorably reduce crosstalk components output from respective speakers that reproduce left and right ear signals.Directivity is given to a left ear signal and a right ear signal and the left ear signal and the right ear signal are reproduced by using at least two respective speakers arranged back-to-back to reduce crosstalk components. For example, the speaker may be a speaker installed in a headrest or a seat provided with the headrest. For example, the directivity given to the left ear signal and the directivity given to the right ear signal may be bidirectional directivity or unidirectional directivity.

公开(公告)号：US10748519B2

公开(公告)日：2020-08-18

申请号：US16340764

申请日：2017-07-26

Applicant: Sony Corporation

Inventor： Tetsunori Itabashi ,  Kohei Asada ,  Shigetoshi Hayashi ,  Kenichi Makino ,  Kazuma Yoshii

IPC: G10K11/178 ,  G10L21/0208 ,  H04R1/10 ,  B60R11/02 ,  B60R16/02

Abstract: A signal processing apparatus includes a signal processor configured to: generate a first noise reduction signal using an adaptive filter based on a signal output from a first input apparatus, and cause the generated first noise reduction signal to be output by a first output apparatus; and generate a second noise reduction signal using a feedback filter based on a signal output from a second input apparatus, and cause the generated second noise reduction signal to be output by a second output apparatus. The feedback filter has a fixed feedback coefficient. The first input apparatus is located at a first noise-cancellation target location in an environment, and the second input apparatus is located at a second noise-cancellation target location in the environment, which may be different from the first noise-cancellation target location.

公开(公告)号：US10667034B2

公开(公告)日：2020-05-26

申请号：US16354710

申请日：2019-03-15

Applicant: Sony Corporation

Inventor： Kohei Asada ,  Yushi Yamabe ,  Shigetoshi Hayashi

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

Abstract: [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.

公开(公告)号：US20190251948A1

公开(公告)日：2019-08-15

申请号：US16088892

申请日：2017-01-24

Applicant: Sony Corporation

Inventor： Shigetoshi Hayashi ,  Kohei Asada ,  Tetsunori Itabashi ,  Kenichi Makino

IPC: G10K11/178 ,  B60R11/02 ,  B60N2/879

CPC classification number: G10K11/17823 ,  B60N2/879 ,  B60R11/0217 ,  B60R2011/0017 ,  G10K11/17819 ,  G10K11/17854 ,  G10K11/17881 ,  G10K2210/1282 ,  G10K2210/3019 ,  G10K2210/3221 ,  G10K2210/506 ,  H04R1/02 ,  H04R3/005 ,  H04R2410/05 ,  H04R2499/13

Abstract: [Object] To reduce the influence of noise in a more preferred aspect even in an environment in which a user hears an acoustic sound output to an open space.[Solution] A signal processing device includes: a generation unit configured to generate a first noise reduction signal for driving a first acoustic device which outputs a first acoustic sound for reducing noise; and an acquisition unit configured to acquire a sound collection result of an acoustic sound collected by a predetermined sound collection unit, the acoustic sound including the first acoustic sound propagating from the first acoustic device via a first propagation path and a second acoustic sound propagating from a second acoustic device different from the first acoustic device via a second propagation path. The generation unit generates the first noise reduction signal on a basis of the sound collection result and a cancellation signal based on a second noise reduction signal for driving the second acoustic device.

公开(公告)号：US20190215598A1

公开(公告)日：2019-07-11

申请号：US16354710

申请日：2019-03-15

Applicant: Sony Corporation

Inventor： Kohei Asada ,  Yushi Yamabe ,  Shigetoshi Hayashi

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

Abstract: [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.