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1. 发明授权

US10880643B2 Sound-source-direction determining apparatus, sound-source-direction determining method, and storage medium 有权
公开(公告)号：US10880643B2
公开(公告)日：2020-12-29
申请号：US16558360
申请日：2019-09-03
申请人： FUJITSU LIMITED
发明人： Chisato Shioda , Nobuyuki Washio , Masanao Suzuki
IPC分类号： H04R3/00 , H04R29/00 , H04R1/40
CPC分类号： H04R3/005 , H04R1/406 , H04R29/001
摘要： A sound-source-direction determining apparatus includes a processor that updates a reference threshold such that the reference threshold increases as a sound pressure difference increases, the sound pressure difference being a difference between sound pressure of a certain frequency component of sound acquired by the first microphone and sound pressure of the certain frequency component of the sound acquired by the second microphone when the synthesized sound is output from the speaker and determines a direction in which a sound source of sound is located, based on comparison between the reference threshold and a sound pressure difference between sound pressure of a certain frequency component of the sound acquired by the first microphone and sound pressure of the certain frequency component of the sound acquired by the second microphone when the synthesized sound is not output from the speaker.

2. 发明授权

US10609479B2 Device and method for determining a sound source direction 有权
公开(公告)号：US10609479B2
公开(公告)日：2020-03-31
申请号：US16127601
申请日：2018-09-11
申请人： FUJITSU LIMITED
发明人： Chisato Shioda , Nobuyuki Washio , Masanao Suzuki , Shunsuke Takeuchi , Yoshiteru Tsuchinaga
IPC分类号： G10L25/21 , H04R3/00 , G10L25/18 , H04R1/40 , G01S3/80
摘要： A device for determining a sound source direction determines a direction in which a source of a reached sound exists, based on at least one of a sound pressure difference between a first sound pressure that is a sound pressure of a first frequency component of a first part of the reached sound acquired by a first microphone and a second sound pressure that is a sound pressure of the first frequency component of a second part of the reached sound acquired by a second microphone, and a phase difference between a first phase that is a phase of a second frequency component of the first part of the reached sound and a second phase that is a phase of the second frequency component of the second part of the reached sound.

3. 发明授权

US09508352B2 Audio coding device and method 有权
标题翻译：音频编码装置及方法
公开(公告)号：US09508352B2
公开(公告)日：2016-11-29
申请号：US14090546
申请日：2013-11-26
申请人： FUJITSU LIMITED
发明人： Shunsuke Takeuchi , Yohei Kishi , Masanao Suzuki , Akira Kamano , Miyuki Shirakawa
IPC分类号： G10L19/00 , G10L21/00 , G10L19/008 , G10L25/12 , G10L19/04
CPC分类号： G10L19/008 , G10L19/04 , G10L25/12
摘要： An audio coding device that performs predictive coding on a third-channel signal included in a plurality of channels in an audio signal according to a first-channel signal and a second-channel signal, which are included in the plurality of channels, and to a plurality of channel prediction coefficients included in a coding book, the device includes a processor; and a memory which stores a plurality of instructions, which when executed by the processor, cause the processor to execute, selecting channel prediction coefficients corresponding to the first-channel signal and the second-channel signal so that an error, which is determined by a difference between the third-channel signal before predictive coding and the third-channel signal after predictive coding, is minimized; and controlling the first-channel signal or the second-channel signal so that the error is further reduced.
摘要翻译：一种音频编码装置，其对根据包含在多个声道中的第一声道信号和第二声道信号的音频信号中的多个声道中包括的第三声道信号进行预测编码，包括在编码本中的多个信道预测系数，该装置包括处理器; 以及存储器，其存储多个指令，当由处理器执行时，使得处理器执行，选择与第一信道信号和第二信道信号相对应的信道预测系数，使得由在预测编码之前的第三信道信号与预测编码之后的第三信道信号之间的差异被最小化; 以及控制第一通道信号或第二通道信号，使得误差进一步降低。

4. 发明授权

US09299354B2 Audio encoding device and audio encoding method 有权
标题翻译：音频编码装置和音频编码方法
公开(公告)号：US09299354B2
公开(公告)日：2016-03-29
申请号：US13916848
申请日：2013-06-13
申请人： FUJITSU LIMITED
发明人： Shunsuke Takeuchi , Yohei Kishi , Masanao Suzuki , Miyuki Shirakawa
IPC分类号： G10L19/00 , G10L19/008
CPC分类号： G10L19/008
摘要： An audio encoding device includes a processor; and a memory which stores a plurality of instructions, which when executed by the processor, cause the processor to execute, calculating first phases indicating phases of a first channel signal and a second channel signal included in audio signals of a plurality of channels; and performing, on the basis of the first phases, either first predictive coding in which a third channel signal included in the audio signals of the plurality of channels is predicted using the first channel signal and the second channel signal or second predictive coding in which the second channel signal is predicted using the first channel signal.
摘要翻译：音频编码装置包括处理器; 以及存储器，其存储多个指令，所述指令在由所述处理器执行时使所述处理器执行，计算指示包括在多个通道的音频信号中的第一通道信号和第二通道信号的相位的第一相位; 并且基于所述第一阶段执行其中使用所述第一信道信号和所述第二信道信号或所述第二预测编码来预测包括在所述多个信道中的音频信号中的第三信道信号的第一预测编码，其中，使用第一信道信号来预测第二信道信号。

5. 发明授权

US09271089B2 Voice control device and voice control method 有权
标题翻译：语音控制装置和语音控制方式
公开(公告)号：US09271089B2
公开(公告)日：2016-02-23
申请号：US13924071
申请日：2013-06-21
申请人： FUJITSU LIMITED
发明人： Masanao Suzuki , Takeshi Otani , Taro Togawa , Chisato Ishikawa
IPC分类号： H03G3/20 , H04R25/00 , A61B5/12 , A61B5/00 , G10L21/0364 , G10L21/057
CPC分类号： H04R25/30 , A61B5/123 , A61B5/749 , G10L21/0364 , G10L2021/0575 , H04R25/70
摘要： A voice control device includes a hearing estimate section configured to estimate hearing of a user based on a sending/received sound ratio representing a ratio of the volume of a sending sound to the volume of a received sound; a compensation-quantity calculating section configured to calculate a compensation quantity for a received signal of the received sound responsive to the estimated hearing; and a compensation section configured to compensate the received signal based on the calculated compensation quantity.
摘要翻译：语音控制装置包括：听觉估计部，被配置为基于表示发送声音的音量与所接收的声音的音量的比的发送/接收声音比率来估计用户的听觉; 补偿量计算部分，被配置为响应于所估计的听觉来计算接收到的声音的接收信号的补偿量; 以及补偿部，被配置为基于所计算的补偿量来补偿所接收的信号。

6. 发明申请

US20140278446A1 DEVICE AND METHOD FOR DATA EMBEDDING AND DEVICE AND METHOD FOR DATA EXTRACTION 有权
标题翻译：用于数据嵌入的设备和方法以及用于数据提取的设备和方法
公开(公告)号：US20140278446A1
公开(公告)日：2014-09-18
申请号：US14087121
申请日：2013-11-22
申请人： FUJITSU LIMITED
发明人： Akira KAMANO , Yohei Kishi , Masanao Suzuki , Shunsuke Takeuchi
IPC分类号： G10L19/008 , G10L19/04
CPC分类号： G10L19/008 , G10L19/018 , G10L19/04
摘要： A data embedding device includes a storage unit configured to store a code book that includes a plurality of prediction parameters; a processor; and a memory which stores a plurality of instructions, which when executed by the processor, cause the processor to execute, extracting a plurality of candidates, of which a prediction error in prediction coding, the prediction coding being based on signals of other two channels, of a signal of one channel among signals of a plurality of channels is within a predetermined range, of a prediction parameter from the code book and extracting the number of candidates of the prediction parameter, the candidates being extracted; converting at least part of data that is an embedding object into a number base based on the number of candidates; and selecting a prediction parameter, the prediction parameter being a result of the prediction coding, from the candidates.
摘要翻译：数据嵌入装置包括：存储单元，被配置为存储包括多个预测参数的码本; 处理器以及存储器，其存储多个指令，当所述处理器执行时，使所述处理器执行，提取其中预测编码中的预测误差的多个候选，所述预测编码基于其他两个信道的信号，在多个信道的信号之中的一个信道的信号在来自码本的预测参数的预定范围内，并且提取预测参数的候选的数量，提取候选; 基于候选数量将嵌入对象的数据的至少一部分转换为数字基; 以及从所述候选中选择预测参数，所述预测参数是所述预测编码的结果。

7. 发明申请

US20140029752A1 AUDIO DECODING DEVICE AND AUDIO DECODING METHOD 有权
标题翻译：音频解码设备和音频解码方法
公开(公告)号：US20140029752A1
公开(公告)日：2014-01-30
申请号：US13904165
申请日：2013-05-29
申请人： Fujitsu Limited
发明人： Yohei KISHI , Akira Kamano , Shunsuke Takeuchi , Miyuki Shirakawa , Masanao Suzuki
IPC分类号： G10L19/008 , G10L19/04
CPC分类号： G10L19/008 , G10L19/0204 , G10L19/04 , G10L25/12
摘要： An audio decoding device includes a processor; and a memory which stores a plurality of instructions, which when executed by the processor, cause the processor to execute, decoding, using a first channel signal and a second channel signal included in a plurality of channels of an audio signal having a first frequency range and a second frequency range, a first prediction coefficient of the first frequency range and a second prediction coefficient of the second frequency range, both selected from a code book when prediction-encoding a third channel signal that is not subjected to prediction encoding and that is included in the plurality of channels; decoding a residual signal included in the first frequency range, the residual signal representing an error occurring in prediction encoding; and prediction-decoding the third channel signal subjected to prediction-encoding in the second frequency range from the first channel signal, the second channel signal.
摘要翻译：音频解码装置包括处理器; 以及存储器，其存储多个指令，所述指令在由所述处理器执行时使所述处理器执行，解码使用包括在具有第一频率范围的音频信号的多个通道中的第一通道信号和第二通道信号以及第二频率范围，第一频率范围的第一预测系数和第二频率范围的第二预测系数，两者都是从对未进行预测编码的第三频道信号进行预测编码时的码本中选择的，包括在多个通道中; 对包含在第一频率范围内的残差信号进行解码，残差信号表示在预测编码中发生的误差; 并从第一信道信号，第二信道信号预测解码在第二频率范围内进行预测编码的第三信道信号。

8. 发明申请

US20130261485A1 APNEA EPISODE DETERMINATION DEVICE AND APNEA EPISODE DETERMINATION METHOD 有权
标题翻译： APNEA EPISODE确定装置和APNEA EPISODE测定方法
公开(公告)号：US20130261485A1
公开(公告)日：2013-10-03
申请号：US13692463
申请日：2012-12-03
申请人： FUJITSU LIMITED
发明人： Chisato ISHIKAWA , Taro Togawa , Takeshi Otani , Masanao Suzuki , Asako Nishida
IPC分类号： A61B5/00
CPC分类号： A61B5/4818 , A61B5/7257 , A61B7/003
摘要： An apnea episode determination device includes, a processor; and a memory which stores a plurality of instructions, which when executed by the processor, cause the processor to execute, detecting a breathing segment and a midway segment from a sound signal during sleep, the breathing segment being considered to include a breathing sound, the midway segment existing in between the breathing segments; calculating an acoustic feature based on a background noise component and a signal component excluding the background noise component, which are included in the midway segment; and determining that the midway segment is an apnea episode when the acoustic feature meets a preset condition.
摘要翻译：呼吸暂停发作确定装置包括：处理器; 以及存储器，其存储多个指令，所述指令在由所述处理器执行时使得所述处理器在睡眠期间从声音信号执行，检测呼吸段和中途段，所述呼吸段被认为包括呼吸声，呼吸段之间存在中段; 基于背景噪声分量和除了背景噪声分量之外的信号分量来计算声学特征，其包括在中间分段中; 并且当声学特征满足预设条件时，确定中间段是呼吸暂停发作。

9. 发明授权

US11295755B2 Storage medium, sound source direction estimation method, and sound source direction estimation device 有权
公开(公告)号：US11295755B2
公开(公告)日：2022-04-05
申请号：US16532188
申请日：2019-08-05
申请人： FUJITSU LIMITED
发明人： Nobuyuki Washio , Masanao Suzuki , Chisato Shioda
IPC分类号： G10L25/51 , H04R3/00 , H04R5/04 , G06F40/263
摘要： A non-transitory computer-readable storage medium storing a program that causes a processor included in a computer mounted on a sound source direction estimation device to execute a process, the process includes calculating a sound pressure difference between a first voice data acquired from a first microphone and a second voice data acquired from a second microphone and estimating a sound source direction of the first voice data and the second voice data based on the sound pressure difference, outputting an instruction to execute a voice recognition on the first voice data or the second voice data in a language corresponding to the estimated sound source direction, and controlling a reference for estimating a sound source direction based on the sound pressure difference, based on a time length of the voice data used for the voice recognition based on the instruction and a voice recognition time length.

10. 发明授权

US11205416B2 Non-transitory computer-read able storage medium for storing utterance detection program, utterance detection method, and utterance detection apparatus 有权
公开(公告)号：US11205416B2
公开(公告)日：2021-12-21
申请号：US16668009
申请日：2019-10-30
申请人： FUJITSU LIMITED
发明人： Nobuyuki Washio , Chisato Shioda , Masanao Suzuki
IPC分类号： G10L15/00 , G10L21/0308 , G10L21/0216 , G06F40/58
摘要： An utterance detection apparatus includes a processor configured to: detect an utterance start based on a first sound pressure based on first audio data acquired from a first microphone and a second sound pressure based on second audio data acquired from a second microphone; suppress an utterance start direction sound pressure when the utterance start direction sound pressure, which is one of the first sound pressure and the second sound pressure being larger at a time point of detecting the utterance start, falls below a non-utterance start direction sound pressure, which is the other one of the first sound pressure and the second sound pressure being smaller at the time point of detecting the utterance start; and detect an utterance end based on the suppressed utterance start direction sound pressure.

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