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公开(公告)号：US12119013B2
公开(公告)日：2024-10-15
申请号：US17778277
申请日：2020-11-16
Inventor： Masanari Miyamoto , Naoya Tanaka , Hiromasa Ohashi
IPC: G10L21/00 , G10L15/20 , G10L21/02 , G10L21/0208 , H04R3/02
CPC classification number: G10L21/0208 , G10L15/20 , H04R3/02
Abstract: An acoustic crosstalk suppression device includes a speaker estimation unit configured to estimate a main speaker based on voice signals collected by n units of microphones corresponding to n number of persons (n: an integer equal to or larger than 3); n units of filter update units each of which is configured to update a parameter of a filter configured to generate a suppression signal of a crosstalk component included in a voice signal of the main speaker; and a crosstalk suppression unit configured to suppress the crosstalk component by using a synthesis suppression signal generated by the maximum (n-1) units of filter update units corresponding to reference signals collected by the maximum (n-1) units of microphones.
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公开(公告)号：US12118990B2
公开(公告)日：2024-10-15
申请号：US18370162
申请日：2023-09-19
Inventor： Naoya Tanaka , Tomofumi Yamanashi , Masanari Miyamoto
CPC classification number: G10L15/20 , B60R11/0217 , B60R11/0247 , G10L15/10 , G10L15/30 , H04R1/025 , B60R2011/0005 , B60R2011/0021
Abstract: A voice processing device includes plural microphones arranged so as to correspond to a plurality of positions. The voice processing device includes at least one memory that stores instructions and voice signals from the plural microphones, and a processor. The voice signals collected by the plural microphones, respectively, during a prescribed period before a present time, are repeatedly stored in the at least one memory as buffered voice signals. The processor detects whether a prescribed word is uttered by a speaker based on the voice signals collected by the plural microphones, determines a microphone corresponding to the speaker by referring to the buffered voice signals, and suppresses the voice signals collected by the plural microphones other than the microphone corresponding to the speaker.
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公开(公告)号：US09497560B2
公开(公告)日：2016-11-15
申请号：US14774126
申请日：2014-01-30
Inventor： Naoya Tanaka
Abstract: An audio reproducing apparatus includes: an obtainment unit configured to obtain a stereo audio signal including an L channel signal and an R channel signal; and a control unit configured to (i) generate a first audio signal for a speaker disposed at an upper position in a listening space and a second audio signal for a speaker disposed at a lower position in the listening space, using the L channel signal and the R channel signal and (ii) determine a gain coefficient corresponding to a degree of correlation between the L channel signal and the R channel signal and multiply by the determined gain coefficient at least one of the first audio signal and the second audio signal, to approximate a ratio between energy of sound reproduced from the first audio signal and energy of sound reproduced from the second audio signal to a predetermined value.
Abstract translation: 音频再现装置包括：获取单元，被配置为获得包括L声道信号和R声道信号的立体声音频信号; 以及控制单元，被配置为（i）使用L声道信号生成用于设置在收听空间中的上位置的扬声器的第一音频信号和用于设置在收听空间中的较低位置处的扬声器的第二音频信号，以及 所述R信道信号和（ii）确定与所述L信道信号和所述R信道信号之间的相关程度相对应的增益系数，并将所确定的所述第一音频信号和所述第二音频信号中的至少一个的增益系数相乘， 近似从第一音频信号再现的声音的能量与从第二音频信号再现的声音的能量之间的比率到预定值。
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公开(公告)号：US20210407528A1
公开(公告)日：2021-12-30
申请号：US17472171
申请日：2021-09-10
Inventor： Masanari Miyamoto , Naoya Tanaka , Hiromasa Ohashi
IPC: G10L21/0208 , G10K11/16
Abstract: An acoustic noise suppressing apparatus includes a sound pickup circuit, a first and second suppression circuits, and an output signal selection circuit. The sound pickup circuit picks up sound. The first suppression circuit processes the sound, in which the first suppression circuit is configured to calculate a first suppression sound signal in which acoustic noise is suppressed from the sound by using a first algorithm suitable for multiple sound sources. The second suppression circuit processes the audio signal in parallel with the first suppression circuit, in which the second suppression circuit is configured to calculate a second suppression sound signal in which acoustic noise is suppressed from the sound signal by using a second algorithm suitable for a single sound source. The output signal selection circuit outputs only one of the first suppression audio signal and the second suppression audio
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公开(公告)号：US11152010B2
公开(公告)日：2021-10-19
申请号：US16841199
申请日：2020-04-06
Inventor： Masanari Miyamoto , Naoya Tanaka , Hiromasa Ohashi
IPC: G10L15/20 , G10L21/0208 , G10K11/16
Abstract: An acoustic noise suppressing apparatus outputs a first suppression audio signal in which the acoustic noise is suppressed by subtracting a first pseudo noise signal from the picked up audio signal, the first pseudo noise signal being generated based on a first delay signal and a first filter updated by a first algorithm which is valid when a plurality of talkers are talking, and outputs a second suppression audio signal in which the acoustic noise is suppressed by subtracting a second pseudo noise signal from the picked up audio signal, the second pseudo noise signal being generated based on a second delay signal and a second filter updated by a second algorithm which is valid when one talker is talking. The apparatus outputs a suppressed one of the first suppressed audio signal or the second suppressed audio signal.
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Patent Agency Ranking
公开(公告)号：US10542154B2
公开(公告)日：2020-01-21
申请号：US15737465
申请日：2016-09-29
Inventor： Ryoji Suzuki , Hiromasa Ohashi , Naoya Tanaka
Abstract: A two-way conversation assisting device includes a first microphone that enters a first voice, a first loudspeaker that outputs the first voice, a second microphone that enters a second voice, a second loudspeaker that outputs the second voice, and a first echo and crosstalk canceller. The first echo and crosstalk canceller estimates and calculates, using an input signal into the second loudspeaker, a first interference signal indicative of degrees of a first echo caused when the second voice output from the second loudspeaker enters into the first microphone and first crosstalk caused when the second voice enters into the first microphone, and removes the calculated first interference signal from an output signal of the first microphone.
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公开(公告)号：US11804220B2
公开(公告)日：2023-10-31
申请号：US16979714
申请日：2018-12-11
Inventor： Naoya Tanaka , Tomofumi Yamanashi , Masanari Miyamoto
CPC classification number: G10L15/20 , B60R11/0217 , B60R11/0247 , G10L15/10 , G10L15/30 , H04R1/025 , B60R2011/0005 , B60R2011/0021
Abstract: This voice processing device is provided with: an utterer's position detection unit which specifies, as position microphones of an utterer, microphones that receive a voice signal of WuW on the basis of the characteristics of each voice signal for a prescribed time, when the WuW voice is detected, the voice signal being held in a voice signal buffer unit; and a CTC unit (one example of a voice processing unit) which outputs a voice uttered by the utterer and suppress a voice uttered by an occupant, who is not the utterer, by using the voice signal for the prescribed time, which is held in the voice signal buffer unit, and information relating to the utterer's position microphones.
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公开(公告)号：US10290312B2
公开(公告)日：2019-05-14
申请号：US15889279
申请日：2018-02-06
Inventor： Ryoji Suzuki , Hiromasa Ohashi , Naoya Tanaka
IPC: H04R3/00 , H04R3/14 , G10L21/028 , G10L21/0272 , H04R3/02
Abstract: A sound source separation device includes a first microphone that picks up a first voice, a second microphone that picks up a second voice, a first crosstalk canceller that removes, from a voice signal of the first microphone, first crosstalk caused when the second voice is picked up by the first microphone, and a second crosstalk canceller that removes, from a voice signal of the second microphone, second crosstalk caused when the first voice is picked up by the second microphone. The first crosstalk canceller uses a voice signal in which the second crosstalk is removed from the voice signal of the second microphone to estimate and calculate a first interference signal indicative of a degree of the first crosstalk, and to remove the calculated first interference signal from the voice signal of the first microphone. The second crosstalk canceller uses a voice signal in which the first crosstalk is removed from the voice signal of the first microphone to estimate and calculate a second interference signal indicative of a degree of the second crosstalk, and to remove the calculated second interference signal from the voice signal of the second microphone.
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公开(公告)号：US12126983B2
公开(公告)日：2024-10-22
申请号：US17967471
申请日：2022-10-17
Inventor： Hiromasa Ohashi , Naoya Tanaka , Ryo Hirota
Abstract: A control device controls sound of a plurality of speakers. The control device includes: a generation unit acquiring image data and generates display image data from the image data by using conversion processing using shape information indicating a shape of a display surface; a display controller displaying a display image on the display surface by using the display image data; a receiver causing a cursor to be superimposed and displayed on the display image and receives position designation related to the plurality of speakers on the display image from a user who has visually recognized the cursor; and an identification unit calculating a position of the cursor from the position designation by referring to a correspondence relationship between the image data before the conversion processing and the display image data after the conversion processing, and identifying the position of the cursor as a position related to the plurality of speakers.
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公开(公告)号：US11676617B2
公开(公告)日：2023-06-13
申请号：US17472171
申请日：2021-09-10
Inventor： Masanari Miyamoto , Naoya Tanaka , Hiromasa Ohashi
IPC: G10L15/20 , G10L21/0208 , G10K11/16
CPC classification number: G10L21/0208 , G10K11/16 , G10K2210/1282
Abstract: An acoustic noise suppressing apparatus includes a sound pickup circuit, a first and second suppression circuits, and an output signal selection circuit. The sound pickup circuit picks up sound. The first suppression circuit processes the sound, in which the first suppression circuit is configured to calculate a first suppression sound signal in which acoustic noise is suppressed from the sound by using a first algorithm suitable for multiple sound sources. The second suppression circuit processes the audio signal in parallel with the first suppression circuit, in which the second suppression circuit is configured to calculate a second suppression sound signal in which acoustic noise is suppressed from the sound signal by using a second algorithm suitable for a single sound source. The output signal selection circuit outputs only one of the first suppression audio signal and the second suppression audio signal.
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