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公开(公告)号：US10567697B2
公开(公告)日：2020-02-18
申请号：US16266464
申请日：2019-02-04
Applicant: SOCIONEXT INC.
Inventor： Shuji Miyasaka
Abstract: A signal processing device includes: a resonant band-pass filter which extracts a frequency component which causes resonance of a housing from an input signal; a harmonic generating unit configured to generate a harmonic signal for an output signal of the resonant band-pass filter; an adding unit configured to add an output signal of the harmonic generating unit and at least a portion of a frequency component of the input signal; and a resonant band-stop filter which removes the frequency component which causes the resonance of the housing from an output signal of the adding unit.
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公开(公告)号：US10237510B2
公开(公告)日：2019-03-19
申请号：US15991064
申请日：2018-05-29
Applicant: SOCIONEXT INC.
Inventor： Shuji Miyasaka
Abstract: A signal processing device includes: a resonant band-pass filter which extracts frequency components which cause resonance of a housing from an input signal; a harmonic generating unit which generates a harmonic signal for an output signal of the resonant band-pass filter; an adding unit which adds an output signal of the harmonic generating unit and at least a portion of frequency components of the input signal; and a resonant band-stop filter which removes the frequency components which cause the resonance of the housing from an output signal of the adding unit.
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公开(公告)号：US09779740B2
公开(公告)日：2017-10-03
申请号：US15097117
申请日：2016-04-12
Applicant: SOCIONEXT INC.
Inventor： Shuji Miyasaka , Kazutaka Abe , Zong Xian Liu , Yong Hwee Sim , Anh Tuan Tran
IPC: H04R5/00 , G10L19/008 , H04S5/00 , H04S3/00 , G10L19/002
CPC classification number: G10L19/008 , G10L19/002 , H04S3/008 , H04S5/005 , H04S2400/11 , H04S2400/15
Abstract: An input signal includes a channel-based audio signal and an object-based audio signal, and an audio encoding device includes an audio scene analysis unit configured to determine an audio scene from the input signal and detect audio scene information; a channel-based encoder that encodes the channel-based audio signal output from the audio scene analysis unit; an object-based encoder that encodes the object-based audio signal output from the audio scene analysis unit; and an audio scene encoding unit configured to encode the audio scene information.
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公开(公告)号：US11700500B2
公开(公告)日：2023-07-11
申请号：US17374780
申请日：2021-07-13
Applicant: SOCIONEXT INC.
Inventor： Shuji Miyasaka , Kazutaka Abe , Yasunori Naruse
CPC classification number: H04S7/303 , H04S2420/01
Abstract: An audio communication device includes: a sound position determiner that determines sound localization positions for N audio signals in a virtual space having first and second walls; N sound localizers each performing sound localization processing to localize sound in the sound localization position determined by the sound position determiner, and outputting localized sound signals; an adder that sums the N localized sound signals, and outputs a summed localized sound signal. Each sound localizer performs the processing using: a first head-related transfer function (HRTF) assuming that a sound wave emitted from the sound localization position of the sound localizer determined by the sound position determiner directly reaches each ear of a hearer virtually present at the hearer position; and a second HRTF assuming that the sound wave emitted from the sound localization position reaches each ear of the hearer after being reflected by closer one of the first and second walls.
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15.发明授权公开(公告)号：US11310621B2
公开(公告)日：2022-04-19
申请号：US16884806
申请日：2020-05-27
Applicant: SOCIONEXT INC.
Inventor： Kazutaka Abe , Shuji Miyasaka , Katsumi Kobayashi , Yoshitaka Mizuno
Abstract: A signal processing device includes one or more filter processors that perform sound localization processing of an input acoustic signal and generate output signals; a coefficient setter that sets, for the filter processors, a plurality of filter coefficients for use in the filter processors; an output data selector that selects, out of the output signals subjected to the sound localization processing by the filter processors, output signals to be output to a left speaker and a right speaker; a time measurer that monitors a time for switching the output signals; and a controller that causes the output data selector to select the output signals in accordance with the time for switching the output signals. The plurality of filter coefficients include filter coefficients generated under a plurality of hearing conditions.
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Patent Agency Ranking
公开(公告)号：US10587940B2
公开(公告)日：2020-03-10
申请号：US16419793
申请日：2019-05-22
Applicant: SOCIONEXT INC.
Inventor： Shuji Miyasaka , Kazutaka Abe , Katsumi Kobayashi
Abstract: An acoustic device that provides a stereophonic effect to a driver of a mobile object includes: a plurality of speakers (an L channel speaker and an R channel speaker) mounted on a steering wheel that controls a traveling direction of the mobile object; a steering angle detection unit configured to detect a steering angle of the steering wheel; and a signal output unit configured to output a plurality of output signals obtained by performing, on a sound signal, a process relating to the stereophonic effect and depending on the steering angle, respectively to the plurality of speakers.
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公开(公告)号：US10564927B1
公开(公告)日：2020-02-18
申请号：US16405696
申请日：2019-05-07
Applicant: SOCIONEXT INC.
Inventor： Shuji Miyasaka
Abstract: A signal processing apparatus outputs a first coefficient stream that has values assigned to signal streams such that a maximum value of 1 or less is assigned to a signal stream closest to the first reference frequency among signal streams of harmonics appearing in frequency signal of sound, and for the other signal streams, the more distant from the first reference frequency the signal stream is, the smaller the value assigned to the signal stream becomes, generates a folding signal stream by multiplying the signal stream of the frequency signal having the bandwidth W on a lower frequency side than the first reference frequency by the first coefficient stream, and folding the signal stream of the frequency signal having a bandwidth W on the lower frequency side than the first reference frequency by using the first reference frequency as a symmetry axis, and outputs a complemented frequency signal.
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公开(公告)号：US10560782B2
公开(公告)日：2020-02-11
申请号：US16160791
申请日：2018-10-15
Applicant: SOCIONEXT INC.
Inventor： Kazutaka Abe , Shuji Miyasaka
Abstract: A signal processor that performs crosstalk cancellation on an audio signal that is input, in a distorted acoustic space where two speakers are placed, the two speakers including an X-side speaker and a Y-side speaker, where X denotes one of left and right, and Y denotes the other of left and right. The signal processor causes the Y-side speaker to output a sound of the audio signal and causes the X-side speaker to output a sound of a signal obtained by processing the audio signal using transfer function GCY, where a transfer function between the Y-side speaker and the Y-side ear is defined as GYY, a transfer function between the X-side speaker and the Y-side ear is defined as GXY, and a transfer function obtained by dividing the transfer function GYY by the transfer function GXY is defined as GCY.
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公开(公告)号：US09792902B2
公开(公告)日：2017-10-17
申请号：US14750647
申请日：2015-06-25
Applicant: Socionext Inc.
Inventor： Shuji Miyasaka , Kazutaka Abe
CPC classification number: G10L15/08 , G10L13/00 , G10L15/22 , G10L15/222 , G10L15/28 , G10L17/22 , G10L21/0208 , G10L2015/088 , G10L2015/223 , G10L2021/02082
Abstract: A device including a speech recognition function which recognizes speech from a user, includes: a loudspeaker which outputs speech to a space; a microphone which collects speech in the space; a first speech recognition unit which recognizes the speech collected by the microphone; a command control unit which issues a command for controlling the device, based on the speech recognized by the first speech recognition unit; and a control unit which prohibits the command issuance unit from issuing the command, based on the speech to be output from the loudspeaker.
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公开(公告)号：US11758337B2
公开(公告)日：2023-09-12
申请号：US17501566
申请日：2021-10-14
Applicant: SOCIONEXT INC.
Inventor： Shuji Miyasaka
CPC classification number: H04R25/502 , G10L19/02 , G10L25/93 , H04R25/353
Abstract: An audio processing apparatus includes a preprocessor which extracts a voice-band signal from a first electric signal, and outputs a first output signal containing the voice-band signal; a first controller which generates a first amplification coefficient for multiplying with the first output signal to compress a dynamic range of an intensity of the first output signal, and generates a first modified amplification coefficient by smoothing the first amplification coefficient with a first time constant; and a first multiplier which multiplies the first modified amplification coefficient and the first output signal. The first time constant is a first rise time constant when the intensity increases, and is a first decay time constant when the intensity decreases. The first rise time constant is not less than a temporal resolution of hearing of a hearing-impaired person, and is less than a duration time of sound which induces recruitment in the hearing-impaired person.
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