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1. 发明授权

US11507759B2 Speech translation device, speech translation method, and recording medium 有权
公开(公告)号：US11507759B2
公开(公告)日：2022-11-22
申请号：US16824110
申请日：2020-03-19
申请人： Panasonic Corporation
发明人： Hiroki Furukawa , Atsushi Sakaguchi , Tsuyoki Nishikawa
IPC分类号： G06F40/58 , G10L15/04 , G10L15/26 , G06F3/16 , G06F3/04842 , G06F9/54 , G10L13/00
摘要： A speech translation device, for conversation between a first speaker making an utterance in a first language and a second speaker making an utterance in a second language different from the first language, includes: a speech detector that detects, from sounds that are input, a speech segment in which the first speaker or the second speaker made an utterance; a display that, after speech recognition is performed on the utterance, displays a translation result obtained by translating the utterance from the first language to the second language or from the second language to the first language; and an utterance instructor that outputs, in the second language via the display, a message prompting the second speaker to make an utterance after a first speaker's utterance or outputs, in the first language via the display, a message prompting the first speaker to make an utterance after a second speaker's utterance.

2. 发明授权

US11182567B2 Speech translation apparatus, speech translation method, and recording medium storing the speech translation method 有权
公开(公告)号：US11182567B2
公开(公告)日：2021-11-23
申请号：US16364811
申请日：2019-03-26
申请人： Panasonic Corporation
发明人： Hiroki Furukawa , Tsuyoki Nishikawa , Atsushi Sakaguchi , Kohhei Hayashida
IPC分类号： G06F40/58 , G01S3/802 , G06F40/103 , G10L15/26
摘要： A speech translation apparatus includes: an estimator which estimates a sound source direction, based on an acoustic signal obtained by a microphone array unit; a controller which identifies that an utterer is a user or a conversation partner, based on the sound source direction estimated after the start of translation is instructed by a button, using a positional relationship indicated by a layout information item stored in storage and selected in advance, and determines a translation direction indicating input and output languages in and into which content of the acoustic signal is recognized and translated, respectively; and a translator which obtains, according to the translation direction, original text indicating the content in the input language and translated text indicating the content in the output language. The controller displays the original and translated texts on first and second display areas corresponding to the positions of the user and conversation partner, respectively.

3. 发明申请

US20170249936A1 SPEECH RECOGNITION METHOD, SPEECH RECOGNITION APPARATUS, AND NON-TRANSITORY COMPUTER-READABLE RECORDING MEDIUM STORING A PROGRAM 审中-公开
公开(公告)号：US20170249936A1
公开(公告)日：2017-08-31
申请号：US15430690
申请日：2017-02-13
申请人： Panasonic Corporation
发明人： Kohhei Hayashida , Tsuyoki Nishikawa
IPC分类号： G10L15/04 , G10L15/28 , G10L21/0232
CPC分类号： G01S3/80 , G10L15/00 , G10L2021/02166 , H04R3/005 , H04R2430/23
摘要： A speech recognition method acquires sound information via multiple microphones, detects a sound source interval including sound from the sound information, acquires an estimated direction of speech by conducting direction estimation on a speech interval from among the sound source interval, conducts an adaptation process of using the sound information to estimate filter coefficients, decides a buffer size of the sound information to hold in a buffer, based on sound source interval information, estimated direction information, and adaptation process convergence state information, holds the sound information in the buffer according to the buffer size, conducts a beamforming process using the sound information held in the buffer and the filter coefficients to acquire speech information, and conducts speech recognition on the speech information acquired by the beamforming process. The method decides the buffer size to be a size sufficient for convergence of the adaptation process immediately after sound information processing starts.

4. 发明授权

US11315572B2 Speech recognition device, speech recognition method, and recording medium 有权
公开(公告)号：US11315572B2
公开(公告)日：2022-04-26
申请号：US16826899
申请日：2020-03-23
申请人： Panasonic Corporation
发明人： Tsuyoki Nishikawa , Hiroki Furukawa , Atsushi Sakaguchi
IPC分类号： G10L17/00 , G10L17/02
摘要： A speech recognition device includes: an obtaining unit which obtains a speech uttered in a conversation between a first speaker and a second speaker; a storage which stores the speech obtained; an input unit which receives operation input; an utterance start detector which, when the input unit receives the operation input, detects a start position of the speech; and a speaker identification unit which identifies a speaker of the speech as the first speaker who has performed the operation input or the second speaker who has not performed the operation input, based on (i) first timing at which the input unit has received the operation input and (ii) second timing indicating the detected start position of the speech. The first and second timing are set for each speech of the first and second speakers. A speech recognizer performs speech recognition on the speech whose speaker has been identified.

5. 发明授权

US11238852B2 Speech translation device, speech translation method, and recording medium therefor 有权
公开(公告)号：US11238852B2
公开(公告)日：2022-02-01
申请号：US16363407
申请日：2019-03-25
申请人： Panasonic Corporation
发明人： Kohhei Hayashida , Atsushi Sakaguchi , Kazuya Nomura , Hiroki Furukawa , Tsuyoki Nishikawa
IPC分类号： G10L15/20 , G06F40/58 , G10L15/22 , H04R1/32
摘要： A speech translation device includes: a beamformer which forms, from a speech signal obtained by a microphone array, a first beam and a second beam having different directions; a direction designator which designates one of the first beam and the second beam according to a user operation; a signal-to-noise (SN) ratio calculator which calculates an SN ratio using the designated beam as a signal component in the SN ratio, and the other beam not designated as a noise component; a display determiner which determines whether recognition of the designated beam is difficult, using the calculated SN ratio, and determines a speaking instruction for overcoming difficulty of the recognition when determining that the recognition is difficult; and a display which displays the speaking instruction determined by the display determiner in a display area.

6. 发明授权

US10395644B2 Speech recognition method, speech recognition apparatus, and non-transitory computer-readable recording medium storing a program 有权
公开(公告)号：US10395644B2
公开(公告)日：2019-08-27
申请号：US15430690
申请日：2017-02-13
申请人： Panasonic Corporation
发明人： Kohhei Hayashida , Tsuyoki Nishikawa
IPC分类号： G10L15/04 , G10L15/28 , G10L21/0216 , H04R3/00
摘要： A speech recognition method acquires sound information via multiple microphones, detects a sound source interval including sound from the sound information, acquires an estimated direction of speech by conducting direction estimation on a speech interval from among the sound source interval, conducts an adaptation process of using the sound information to estimate filter coefficients, decides a buffer size of the sound information to hold in a buffer, based on sound source interval information, estimated direction information, and adaptation process convergence state information, holds the sound information in the buffer according to the buffer size, conducts a beamforming process using the sound information held in the buffer and the filter coefficients to acquire speech information, and conducts speech recognition on the speech information acquired by the beamforming process. The method decides the buffer size to be a size sufficient for convergence of the adaptation process immediately after sound information processing starts.

7. 发明授权

US10079020B2 Speech recognition method and speech recognition apparatus to improve performance or response of speech recognition 有权
公开(公告)号：US10079020B2
公开(公告)日：2018-09-18
申请号：US15344653
申请日：2016-11-07
申请人： Panasonic Corporation
发明人： Tsuyoki Nishikawa
IPC分类号： G10L15/26 , G10L15/28 , G10L25/78 , G10L21/0232
CPC分类号： G10L15/285 , G10L15/20 , G10L15/30 , G10L19/22 , G10L21/0208 , G10L21/0232 , G10L21/0364 , G10L25/78 , G10L2025/783
摘要： In a speech recognition method, a criteria value is determined to determine the length of a silent section included in a processing section, and a processing mode to use is determined in accordance with the criteria value. The criteria value is used to obtain audio information of the processing section. Audio processing is executed on the audio information in the processing section, using the processing mode that has been determined. Speech recognition processing is executed on the audio information in the processing section that has been subjected to audio processing.

8. 发明授权

US10360922B2 Noise reduction device and method for reducing noise 有权
公开(公告)号：US10360922B2
公开(公告)日：2019-07-23
申请号：US15702890
申请日：2017-09-13
申请人： Panasonic Corporation
发明人： Tsuyoki Nishikawa , Kohhei Hayashida
IPC分类号： H04R3/00 , H04R1/02 , G10L21/0232 , H04R1/40 , G10L21/0208 , G10L21/0216
摘要： A noise reduction device includes an acoustic characteristic determination unit, a microphone pair selection unit, and a noise reduction unit. The acoustic characteristic determination unit determines, using one of microphone pair signals obtained from a plurality of microphone pairs, whether acoustic characteristics of each of the plurality of microphone pairs satisfy a certain requirement. The microphone pair selection unit selects, from among the plurality of microphone pairs, a target microphone pair whose acoustic characteristics have been determined to satisfy the certain requirement. The noise reduction unit reduces, using a microphone pair signal obtained from the target microphone pair, noise included in an input signal obtained from at least one of microphone signals output from a plurality of microphones.

9. 发明授权

US09312913B2 Echo cancellation apparatus, echo cancellation method and communications apparatus 有权
标题翻译：回波消除装置，回波消除方法和通信装置
公开(公告)号：US09312913B2
公开(公告)日：2016-04-12
申请号：US14110938
申请日：2013-02-07
申请人： Panasonic Corporation
发明人： Tsuyoki Nishikawa , Hiroki Furukawa , Takeo Kanamori
IPC分类号： H04B3/23 , H04R3/02 , H04M9/08 , H04R27/00
CPC分类号： H04B3/23 , H04M9/082 , H04R3/02 , H04R27/00
摘要： An echo cancellation apparatus cancels an echo signal included in a second speech signal including the echo signal of a first speech signal, and includes: a first echo replica generating unit generating a first echo replica by processing the first speech signal through a filter whose characteristic is equalized with a acoustic transfer function of amplified sound; a first echo cancelling unit generating and providing a first echo-cancelled signal by subtracting from the second speech signal the first echo replica generated by the first echo replica generating unit; and a filter updating unit generating a nonlinear-converted echo-cancelled signal by performing nonlinear conversion on the first echo-cancelled signal generated by the first echo cancelling unit, and updating the filter characteristic thereby equalizing the filter characteristic with the acoustic transfer function, using the nonlinear-converted echo-cancelled signal, the first speech signal, and a norm of the first speech signal.
摘要翻译：回波消除装置消除包括第一语音信号的回波信号的第二语音信号中包括的回波信号，并且包括：第一回波复制产生单元，其通过滤波器处理第一语音信号，该滤波器的特征是均衡放大声音的声传递函数; 第一回波消除单元，通过从第二语音信号中减去由第一回波复制产生单元生成的第一回波复制品，生成并提供第一回波消除信号; 以及滤波器更新单元，通过对由第一回波消除单元生成的第一回波消除信号进行非线性转换，生成非线性转换的回波消除信号，并且更新滤波器特性，从而利用声学传递函数来均衡滤波器特性，使用非线性转换的回波消除信号，第一语音信号和第一语音信号的范数。

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