-
公开(公告)号：US12119013B2
公开(公告)日：2024-10-15
申请号：US17778277
申请日：2020-11-16
发明人： Masanari Miyamoto , Naoya Tanaka , Hiromasa Ohashi
IPC分类号： G10L21/00 , G10L15/20 , G10L21/02 , G10L21/0208 , H04R3/02
CPC分类号： G10L21/0208 , G10L15/20 , H04R3/02
摘要： 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.
-
公开(公告)号：US12126983B2
公开(公告)日：2024-10-22
申请号：US17967471
申请日：2022-10-17
发明人： Hiromasa Ohashi , Naoya Tanaka , Ryo Hirota
摘要： 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.
-
公开(公告)号：US20220322005A1
公开(公告)日：2022-10-06
申请号：US17708221
申请日：2022-03-30
发明人： Shinichi Takayama , Hiromasa Ohashi
IPC分类号： H04R3/04 , G10L21/0232 , G10L25/78
摘要： An audio feedback detection apparatus including: a first audio signal input unit configured to acquire a first audio signal collected by a microphone; a second audio signal input unit configured to acquire a second audio signal from an audio communication application to be output to a speaker; and an audio feedback determination unit configured to determine whether an audio feedback is present based on a correlation between a frequency characteristic of the first audio signal input to the audio communication application and a frequency characteristic of the second audio signal input to the speaker. One of the microphone and the speaker is located on a path in which the audio feedback occurs, and the other of the microphone and the speaker is located on a path in which the audio feedback does not occur.
-
公开(公告)号：US11483652B2
公开(公告)日：2022-10-25
申请号：US17023924
申请日：2020-09-17
发明人： Hiromasa Ohashi
IPC分类号： H04R3/02 , G10K11/178 , G10L21/0208
摘要： A conversation support device includes: a speaker; a microphone; a noise source acquisition unit that acquires a noise signal indicating noise; a first calculator that calculates a transfer characteristic of a secondary path between the speaker and the microphone; an echo cancellation unit that cancels an echo by using the transfer characteristic of the secondary path; a second calculator that calculates a coefficient of an adaptive filter, based on the transfer characteristic of the secondary path and the noise signal; and an active noise cancellation controller that generates a noise cancelling signal by using the coefficient of the adaptive filter and the noise signal. The noise cancelling signal is for controlling cancellation of the noise.
-
公开(公告)号：US10290312B2
公开(公告)日：2019-05-14
申请号：US15889279
申请日：2018-02-06
发明人： Ryoji Suzuki , Hiromasa Ohashi , Naoya Tanaka
IPC分类号： H04R3/00 , H04R3/14 , G10L21/028 , G10L21/0272 , H04R3/02
摘要： 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.
-
公开(公告)号：US20210407528A1
公开(公告)日：2021-12-30
申请号：US17472171
申请日：2021-09-10
发明人： Masanari Miyamoto , Naoya Tanaka , Hiromasa Ohashi
IPC分类号： G10L21/0208 , G10K11/16
摘要： 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
-
公开(公告)号：US11152010B2
公开(公告)日：2021-10-19
申请号：US16841199
申请日：2020-04-06
发明人： Masanari Miyamoto , Naoya Tanaka , Hiromasa Ohashi
IPC分类号： G10L15/20 , G10L21/0208 , G10K11/16
摘要： 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.
-
公开(公告)号：US10542154B2
公开(公告)日：2020-01-21
申请号：US15737465
申请日：2016-09-29
发明人： Ryoji Suzuki , Hiromasa Ohashi , Naoya Tanaka
摘要： 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.
-
公开(公告)号：US11676617B2
公开(公告)日：2023-06-13
申请号：US17472171
申请日：2021-09-10
发明人： Masanari Miyamoto , Naoya Tanaka , Hiromasa Ohashi
IPC分类号： G10L15/20 , G10L21/0208 , G10K11/16
CPC分类号： G10L21/0208 , G10K11/16 , G10K2210/1282
摘要： 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.
-
公开(公告)号：US11089404B2
公开(公告)日：2021-08-10
申请号：US16751857
申请日：2020-01-24
发明人： Masanari Miyamoto , Hiromasa Ohashi , Naoya Tanaka
摘要： A sound processing apparatus includes n number of microphones that are disposed correspondingly to n number of persons and that mainly collect sound signals uttered by respective relevant persons, a filter that suppresses crosstalk components included in a talker sound signal collected by a microphone corresponding to at least one talker using the sound signals collected by the n number of microphones, a parameter updater that updates a parameter of the filter for suppressing the crosstalk components and stores an update result in the memory in a case where a predetermined condition including time at which at least one talker talks is satisfied, and a sound output controller that outputs the sound signals, acquired by subtracting the crosstalk components by the filter from the talker sound signals based on the update result, from a speaker.
-
-
-
-
-
-
-
-
-
搜索结果
12 条记录 (耗时 0.019 秒)
