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1. 发明授权

US09390703B2 Masking sound generating apparatus, storage medium stored with masking sound signal, masking sound reproducing apparatus, and program 有权
标题翻译：掩蔽声产生装置，存储有掩蔽声音信号的存储介质，掩蔽声音再现装置和程序
公开(公告)号：US09390703B2
公开(公告)日：2016-07-12
申请号：US13989775
申请日：2011-11-25
申请人： Takashi Yamakawa , Mai Koike , Masato Hata , Yasushi Shimizu
发明人： Takashi Yamakawa , Mai Koike , Masato Hata , Yasushi Shimizu
IPC分类号： G10K11/175 , H04K3/00
CPC分类号： G10K11/175 , H04K3/45 , H04K3/46 , H04K3/825 , H04K3/84 , H04K2203/12
摘要： Whereas a high masking effect can be secured in a space to which a masking sound is emitted, the degree of a discomfort a person existing in the space suffers can be reduced. In superimposition processing, a CPU 21 extracts sound signals in different intervals of a sound signal X12-n of a human voice, superimposes the extracted sound signals on each other on the time axis, and outputs a resulting superimposed sound signal X13-n. In shift and addition processing, the CPU 12 interchanges a sound signal, before a reference position, of a sound signal X16-n and a sound signal, after the reference position, of the sound signal X16-n (shift processing) and outputs a sound signal X17-n obtained by adding together a shift-processed sound signal X16′-n and the original, non-shift-processed sound signal X16-n.
摘要翻译：虽然可以在发出掩蔽声的空间中确保高掩蔽效果，但可以减少存在于空间中的人的不适程度。在叠加处理中，CPU21以人声的声音信号X12-n的不同间隔提取声音信号，在时间轴上叠加提取的声音信号，并输出所得到的叠加声音信号X13-n。在移位和相加处理中，CPU 12将声音信号X16-n和声音信号的参考位置之前的声音信号与声音信号X16-n（移位处理）之间的参考位置交换，并输出通过将移位处理声音信号X16'-n与原始的非移位处理声音信号X16-n相加而获得的声音信号X17-n。

2. 发明申请

US20110182438A1 MASKER SOUND GENERATION APPARATUS AND PROGRAM 有权
公开(公告)号：US20110182438A1
公开(公告)日：2011-07-28
申请号：US13013634
申请日：2011-01-25
申请人： Mai Koike , Yasushi Shimizu , Masato Hata , Takashi Yamakawa
发明人： Mai Koike , Yasushi Shimizu , Masato Hata , Takashi Yamakawa
IPC分类号： H04R3/02
CPC分类号： G01L21/04 , G10K11/175 , G10L21/04 , H04K1/06 , H04K3/45 , H04K3/46 , H04K3/825 , H04K2203/12
摘要： In a masker sound generation apparatus, an acquisition part acquires a sound signal, and a generation part generates a masker sound signal based on the acquired sound signal. Specifically, the generation part divides the sound signal acquired by the acquisition part into a plurality of sections each having a predetermined time length, then repeats a sorting process of sorting the divided sections as a process of changing the sequence of arrangement of the sound signal, and alters a manner of sorting the sections each time the sorting process is repeated.
摘要翻译：在遮罩声产生装置中，获取部获取声音信号，生成部基于取得的声音信号生成遮蔽声音信号。具体地，生成部将由采集部获取的声音信号分割成具有预定时间长度的多个部分，然后重复对分割部分进行排序处理，作为改变声音信号的排列顺序的处理，并且在每次重复排序过程时改变对这些部分进行排序的方式。

3. 发明授权

US08861742B2 Masker sound generation apparatus and program 有权
标题翻译： Masker声音发生装置和程序
公开(公告)号：US08861742B2
公开(公告)日：2014-10-14
申请号：US13013634
申请日：2011-01-25
申请人： Mai Koike , Yasushi Shimizu , Masato Hata , Takashi Yamakawa
发明人： Mai Koike , Yasushi Shimizu , Masato Hata , Takashi Yamakawa
IPC分类号： H04R3/02 , G01L21/04
CPC分类号： G01L21/04 , G10K11/175 , G10L21/04 , H04K1/06 , H04K3/45 , H04K3/46 , H04K3/825 , H04K2203/12
摘要： In a masker sound generation apparatus, an acquisition part acquires a sound signal, and a generation part generates a masker sound signal based on the acquired sound signal. Specifically, the generation part divides the sound signal acquired by the acquisition part into a plurality of sections each having a predetermined time length, then repeats a sorting process of sorting the divided sections as a process of changing the sequence of arrangement of the sound signal, and alters a manner of sorting the sections each time the sorting process is repeated.
摘要翻译：在遮罩声产生装置中，获取部获取声音信号，生成部基于取得的声音信号生成遮蔽声音信号。具体地，生成部将由采集部获取的声音信号分割成具有预定时间长度的多个部分，然后重复对分割部分进行排序处理，作为改变声音信号的排列顺序的处理，并且在每次重复排序过程时改变对这些部分进行排序的方式。

4. 发明申请

US20130315413A1 MASKING SOUND GENERATING APPARATUS, STORAGE MEDIUM STORED WITH MASKING SOUND SIGNAL, MASKING SOUND REPRODUCING APPARATUS, AND PROGRAM 有权
标题翻译：屏蔽声音发生装置，存放有声音信号的存储媒体，显示声音再现装置和程序
公开(公告)号：US20130315413A1
公开(公告)日：2013-11-28
申请号：US13989775
申请日：2011-11-25
申请人： Takashi Yamakawa , Mai Koike , Masato Hata , Yasushi Shimizu
发明人： Takashi Yamakawa , Mai Koike , Masato Hata , Yasushi Shimizu
IPC分类号： G10K11/175
CPC分类号： G10K11/175 , H04K3/45 , H04K3/46 , H04K3/825 , H04K3/84 , H04K2203/12
摘要： Whereas a high masking effect can be secured in a space to which a masking sound is emitted, the degree of a discomfort a person existing in the space suffers can be reduced. In superimposition processing, a CPU 21 extracts sound signals in different intervals of a sound signal X12-n of a human voice, superimposes the extracted sound signals on each other on the time axis, and outputs a resulting superimposed sound signal X13-n. In shift and addition processing, the CPU 12 interchanges a sound signal, before a reference position, of a sound signal X16-n and a sound signal, after the reference position, of the sound signal X16-n (shift processing) and outputs a sound signal X17-n obtained by adding together a shift-processed sound signal X16′-n and the original, non-shift-processed sound signal X16-n.
摘要翻译：虽然可以在发出掩蔽声的空间中确保高掩蔽效果，但可以减少存在于空间中的人的不适程度。在叠加处理中，CPU21以人声的声音信号X12-n的不同间隔提取声音信号，在时间轴上叠加提取的声音信号，并输出所得到的叠加声音信号X13-n。在移位和相加处理中，CPU 12将声音信号X16-n和声音信号的参考位置之前的声音信号与声音信号X16-n（移位处理）之间的参考位置交换，并输出通过将移位处理声音信号X16'-n与原始的非移位处理声音信号X16-n相加而获得的声音信号X17-n。

5. 发明申请

US20100208912A1 MASKING SOUND GENERATING APPARATUS, MASKING SYSTEM, MASKING SOUND GENERATING METHOD, AND PROGRAM 有权
标题翻译：显示声音发生装置，屏蔽系统，屏蔽声音发生方法和程序
公开(公告)号：US20100208912A1
公开(公告)日：2010-08-19
申请号：US12708751
申请日：2010-02-19
申请人： Mikio TOHYAMA , Mai Koike , Yasushi Shimizu
发明人： Mikio TOHYAMA , Mai Koike , Yasushi Shimizu
IPC分类号： H04R3/02
CPC分类号： G10K11/175 , H04K1/02 , H04K1/04 , H04K1/06 , H04K3/43 , H04K3/46 , H04K3/825 , H04K2203/12
摘要： In a masking sound generating apparatus, a band divider divides a target sound signal into a plurality of frequency bands to generate a plurality of band signals. An envelope signal generating part generates a plurality of envelope signals representing respective envelopes of the plurality of the band signals. A signal converter segments each of the plurality of the envelope signals into a plurality of frames, then specifies frames of segmented envelope signals which have an amplitude greater than a first threshold and less than a second threshold, and changes an order of the specified frames in an arrangement of the plurality of the frames. A multiplier multiplies each of the plurality of the envelope signals by a noise signal, each envelope signal having the order of the frames changed by the signal converter, and outputs the plurality of the envelope signals multiplied by the noise signal as individual band masking signals. An adder adds the individual band masking signals to output a masking sound signal capable of masking the target sound signal.
摘要翻译：在掩蔽声产生装置中，分频器将目标声音信号分割为多个频带，以产生多个频带信号。包络信号生成部生成表示多个频带信号的各个信封的多个包络信号。信号转换器将多个包络信号中的每一个分成多个帧，然后指定具有大于第一阈值且小于第二阈值的幅度的分段包络信号的帧，并且改变指定帧的顺序多个框架的布置。乘法器将多个包络信号中的每一个乘以噪声信号，每个包络信号具有由信号转换器改变的帧的顺序，并将乘以噪声信号的多个包络信号作为单独的带屏蔽信号输出。加法器将各个带屏蔽信号相加以输出能够掩蔽目标声音信号的掩蔽声音信号。

6. 发明授权

US08428272B2 Masking sound generating apparatus, masking system, masking sound generating method, and program 有权
标题翻译：掩蔽声产生装置，掩蔽系统，掩蔽声产生方法和程序
公开(公告)号：US08428272B2
公开(公告)日：2013-04-23
申请号：US12708751
申请日：2010-02-19
申请人： Mikio Tohyama , Mai Koike , Yasushi Shimizu
发明人： Mikio Tohyama , Mai Koike , Yasushi Shimizu
IPC分类号： H04R3/02
CPC分类号： G10K11/175 , H04K1/02 , H04K1/04 , H04K1/06 , H04K3/43 , H04K3/46 , H04K3/825 , H04K2203/12
摘要： In a masking sound generating apparatus, a band divider divides a target sound signal into a plurality of frequency bands to generate a plurality of band signals. An envelope signal generating part generates a plurality of envelope signals representing respective envelopes of the plurality of the band signals. A signal converter segments each of the plurality of the envelope signals into a plurality of frames, then specifies frames of segmented envelope signals which have an amplitude greater than a first threshold and less than a second threshold, and changes an order of the specified frames in an arrangement of the plurality of the frames. A multiplier multiplies each of the plurality of the envelope signals by a noise signal, each envelope signal having the order of the frames changed by the signal converter, and outputs the plurality of the envelope signals multiplied by the noise signal as individual band masking signals. An adder adds the individual band masking signals to output a masking sound signal capable of masking the target sound signal.
摘要翻译：在掩蔽声产生装置中，分频器将目标声音信号分割为多个频带，以产生多个频带信号。包络信号生成部生成表示多个频带信号的各个信封的多个包络信号。信号转换器将多个包络信号中的每一个分成多个帧，然后指定具有大于第一阈值且小于第二阈值的幅度的分段包络信号的帧，并且改变指定帧的顺序多个框架的布置。乘法器将多个包络信号中的每一个乘以噪声信号，每个包络信号具有由信号转换器改变的帧的顺序，并将乘以噪声信号的多个包络信号作为单独的带屏蔽信号输出。加法器将各个带屏蔽信号相加以输出能够掩蔽目标声音信号的掩蔽声音信号。

7. 发明授权

US08271288B2 Sound masking system and masking sound generation method 有权
标题翻译：声屏蔽系统和掩蔽声产生方法
公开(公告)号：US08271288B2
公开(公告)日：2012-09-18
申请号：US13240937
申请日：2011-09-22
申请人： Atsuko Ito , Yasushi Shimizu , Akira Miki , Masato Hata
发明人： Atsuko Ito , Yasushi Shimizu , Akira Miki , Masato Hata
IPC分类号： G10L21/00 , H04R3/02
CPC分类号： G10L17/26 , G10K11/175 , G10L21/06 , H04K1/02 , H04K1/06 , H04K3/825 , H04K2203/12
摘要： In a masking sound generation apparatus, a CPU analyzes a speech utterance speed of a received sound signal. Then, the CPU copies the received sound signal into a plurality of sound signals and performs the following processing on each of the sound signals. Namely, the CPU divides each of the sound signals into frames on the basis of a frame length determined on the basis of the speech utterance speed. Reverse process is performed on each of the frames to replace a waveform of the frame with a reverse waveform, and a windowing process is performed to achieve a smooth connection between the frames. Then, the CPU randomly rearranges the order of the frames and mixes the plurality of sound signals to generate a masking sound signal.
摘要翻译：在掩蔽声产生装置中，CPU分析接收到的声音信号的语音发音速度。然后，CPU将接收到的声音信号复制成多个声音信号，并对每个声音信号执行以下处理。也就是说，CPU根据基于语音发音速度确定的帧长度将每个声音信号分成帧。对每个帧执行反向处理以用反向波形替换帧的波形，并且执行窗口处理以实现帧之间的平滑连接。然后，CPU随机地重新排列帧的顺序并混合多个声音信号以产生掩蔽声音信号。

8. 发明申请

US20120016665A1 SOUND MASKING SYSTEM AND MASKING SOUND GENERATION METHOD 有权
标题翻译：声音屏蔽系统和屏蔽声音发生方法
公开(公告)号：US20120016665A1
公开(公告)日：2012-01-19
申请号：US13240937
申请日：2011-09-22
申请人： Atsuko Ito , Yasushi Shimizu , Akira Miki , Masato Hata
发明人： Atsuko Ito , Yasushi Shimizu , Akira Miki , Masato Hata
IPC分类号： G10L19/00
CPC分类号： G10L17/26 , G10K11/175 , G10L21/06 , H04K1/02 , H04K1/06 , H04K3/825 , H04K2203/12
摘要： In a masking sound generation apparatus, a CPU analyzes a speech utterance speed of a received sound signal. Then, the CPU copies the received sound signal into a plurality of sound signals and performs the following processing on each of the sound signals. Namely, the CPU divides each of the sound signals into frames on the basis of a frame length determined on the basis of the speech utterance speed. Reverse process is performed on each of the frames to replace a waveform of the frame with a reverse waveform, and a windowing process is performed to achieve a smooth connection between the frames. Then, the CPU randomly rearranges the order of the frames and mixes the plurality of sound signals to generate a masking sound signal.
摘要翻译：在掩蔽声产生装置中，CPU分析接收到的声音信号的语音发音速度。然后，CPU将接收到的声音信号复制成多个声音信号，并对每个声音信号执行以下处理。也就是说，CPU根据基于语音发音速度确定的帧长度将每个声音信号分成帧。对每个帧执行反向处理以用反向波形替换帧的波形，并且执行加窗处理以实现帧之间的平滑连接。然后，CPU随机地重新排列帧的顺序并混合多个声音信号以产生掩蔽声音信号。

9. 发明授权

US08050931B2 Sound masking system and masking sound generation method 有权
标题翻译：声屏蔽系统和掩蔽声产生方法
公开(公告)号：US08050931B2
公开(公告)日：2011-11-01
申请号：US12051695
申请日：2008-03-19
申请人： Atsuko Ito , Yasushi Shimizu , Akira Miki , Masato Hata
发明人： Atsuko Ito , Yasushi Shimizu , Akira Miki , Masato Hata
IPC分类号： G10L21/00 , H04R3/02
CPC分类号： G10L17/26 , G10K11/175 , G10L21/06 , H04K1/02 , H04K1/06 , H04K3/825 , H04K2203/12
摘要： In a masking sound generation apparatus, a CPU analyzes a speech utterance speed of a received sound signal. Then, the CPU copies the received sound signal into a plurality of sound signals and performs the following processing on each of the sound signals. Namely, the CPU divides each of the sound signals into frames on the basis of a frame length determined on the basis of the speech utterance speed. Reverse process is performed on each of the frames to replace a waveform of the frame with a reverse waveform, and a windowing process is performed to achieve a smooth connection between the frames. Then, the CPU randomly rearranges the order of the frames and mixes the plurality of sound signals to generate a masking sound signal.
摘要翻译：在掩蔽声产生装置中，CPU分析接收到的声音信号的语音发音速度。然后，CPU将接收到的声音信号复制成多个声音信号，并对每个声音信号执行以下处理。也就是说，CPU根据基于语音发音速度确定的帧长度将每个声音信号分成帧。对每个帧执行反向处理以用反向波形替换帧的波形，并且执行加窗处理以实现帧之间的平滑连接。然后，CPU随机地重新排列帧的顺序并混合多个声音信号以产生掩蔽声音信号。

10. 发明申请

US20080235008A1 Sound Masking System and Masking Sound Generation Method 有权
标题翻译：声屏系统和掩蔽声产生方法
公开(公告)号：US20080235008A1
公开(公告)日：2008-09-25
申请号：US12051695
申请日：2008-03-19
申请人： Atsuko ITO , Yasushi Shimizu , Akira Miki , Masato Hata
发明人： Atsuko ITO , Yasushi Shimizu , Akira Miki , Masato Hata
IPC分类号： G10L21/00
CPC分类号： G10L17/26 , G10K11/175 , G10L21/06 , H04K1/02 , H04K1/06 , H04K3/825 , H04K2203/12
摘要： In a masking sound generation apparatus, a CPU analyzes a speech utterance speed of a received sound signal. Then, the CPU copies the received sound signal into a plurality of sound signals and performs the following processing on each of the sound signals. Namely, the CPU divides each of the sound signals into frames on the basis of a frame length determined on the basis of the speech utterance speed. Reverse process is performed on each of the frames to replace a waveform of the frame with a reverse waveform, and a windowing process is performed to achieve a smooth connection between the frames. Then, the CPU randomly rearranges the order of the frames and mixes the plurality of sound signals to generate a masking sound signal.
摘要翻译：在掩蔽声产生装置中，CPU分析接收到的声音信号的语音发音速度。然后，CPU将接收到的声音信号复制成多个声音信号，并对每个声音信号执行以下处理。也就是说，CPU根据基于语音发音速度确定的帧长度将每个声音信号分成帧。对每个帧执行反向处理以用反向波形替换帧的波形，并且执行加窗处理以实现帧之间的平滑连接。然后，CPU随机地重新排列帧的顺序并混合多个声音信号以产生掩蔽声音信号。

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