公开(公告)号：US08447590B2

公开(公告)日：2013-05-21

申请号：US12306413

申请日：2007-06-20

申请人： Toshiaki Ishibashi ,  Ryo Tanaka ,  Satoshi Ukai

发明人： Toshiaki Ishibashi ,  Ryo Tanaka ,  Satoshi Ukai

IPC分类号： G10L11/00

CPC分类号： H04R3/005 ,  H04M3/56 ,  H04M3/568 ,  H04M2201/18 ,  H04R1/406 ,  H04R2201/403 ,  H04R2430/20

摘要： A voice emitting and collecting device that is capable of picking up/outputting a voice emitted from a talker at a high S/N ratio by eliminating the influence of a diffracting voice despite a simple configuration is provided. A signal differencing circuit 191 outputs difference signals MS1 to MS4 between voice collecting beam signals MB11 to MB14 and voice collecting beam signals MB21 to MB24. A level comparator 195 selects the difference signal having a maximum level. A signal selecting circuit 196 selects voice collecting beam signals MB1x, MB2x of the difference signal MS that is selected/pointed by the level comparator 195. A subtracter 199 subtracts the voice collecting beam signal MB2x from the voice collecting beam signal MB1x, and output a resultant signal. Accordingly, main components of the diffracting voice can be removed from the voice collecting beam signal.

摘要翻译： 提供了一种语音发射和收集装置，其能够通过消除尽管简单配置的衍射语音的影响，以高S / N比来拾取/输出从讲话者发出的语音。 信号差分电路191输出语音采集束信号MB11〜MB14和声音采集束信号MB21〜MB24之间的差信号MS1〜MS4。 电平比较器195选择具有最大电平的差分信号。 信号选择电路196选择由电平比较器195选择/指示的差分信号MS的语音采集束信号MB1x，MB2x。减法器199从语音采集束信号MB1x中减去语音采集束信号MB2x，并输出 结果信号。 因此，可以从声音采集束信号中去除衍射声音的主要成分。

公开(公告)号：US20090180633A1

公开(公告)日：2009-07-16

申请号：US12302653

申请日：2007-05-24

申请人： Toshiaki Ishibashi ,  Ryo Tanaka ,  Satoshi Ukai

发明人： Toshiaki Ishibashi ,  Ryo Tanaka ,  Satoshi Ukai

IPC分类号： H04R29/00

CPC分类号： H04R1/406 ,  H04R1/403 ,  H04R27/00 ,  H04R2201/403 ,  H04R2201/405

摘要： A level ratio calculation circuit calculates average signal level data of signal level data corresponding to each sound collection beam signal, and calculates a level ratio between the average signal level data and each of the signal level data. Since a diffraction sound is substantially equal to all the signal level data, a diffraction sound component of the average signal level data also becomes substantially equal. On the other hand, a collection sound from a speaker is specific to the signal level data of the corresponding sound collection beam signal. Therefore, at the level ratio, the portion corresponding to the diffraction sound is flat and a data level becomes high locally in only the portion corresponding to the collection sound. By using this, the sound collection beam signal including the collection sound is detected.

摘要翻译： 电平比计算电路计算与每个声音采集束信号相对应的信号电平数据的平均信号电平数据，并且计算平均信号电平数据与每个信号电平数据之间的电平比。 由于衍射声音基本上等于所有信号电平数据，平均信号电平数据的衍射声分量也变得基本相等。 另一方面，来自扬声器的收集声音特定于对应的声音采集束信号的信号电平数据。 因此，在电平比上，对应于衍射声的部分是平坦的，并且数据电平仅在与收集声音对应的部分中局部变高。 通过使用它，检测包括收集声音的声音采集束信号。

公开(公告)号：US08300839B2

公开(公告)日：2012-10-30

申请号：US12302653

申请日：2007-05-24

申请人： Toshiaki Ishibashi ,  Ryo Tanaka ,  Satoshi Ukai

发明人： Toshiaki Ishibashi ,  Ryo Tanaka ,  Satoshi Ukai

IPC分类号： H04R29/00

CPC分类号： H04R1/406 ,  H04R1/403 ,  H04R27/00 ,  H04R2201/403 ,  H04R2201/405

摘要： A level ratio calculation circuit calculates average signal level data of signal level data corresponding to each sound collection beam signal, and calculates a level ratio between the average signal level data and each of the signal level data. Since a diffraction sound is substantially equal to all the signal level data, a diffraction sound component of the average signal level data also becomes substantially equal. On the other hand, a collection sound from a speaker is specific to the signal level data of the corresponding sound collection beam signal. Therefore, at the level ratio, the portion corresponding to the diffraction sound is flat and a data level becomes high locally in only the portion corresponding to the collection sound. By using this, the sound collection beam signal including the collection sound is detected.

摘要翻译： 电平比计算电路计算与每个声音采集束信号相对应的信号电平数据的平均信号电平数据，并且计算平均信号电平数据与每个信号电平数据之间的电平比。 由于衍射声音基本上等于所有信号电平数据，平均信号电平数据的衍射声分量也变得基本相等。 另一方面，来自扬声器的收集声音特定于对应的声音采集束信号的信号电平数据。 因此，在电平比上，对应于衍射声的部分是平坦的，并且数据电平仅在与收集声音对应的部分中局部变高。 通过使用它，检测包括收集声音的声音采集束信号。

公开(公告)号：US20100166195A1

公开(公告)日：2010-07-01

申请号：US12663220

申请日：2008-05-28

申请人： Satoshi Ukai ,  Ryo Tanaka ,  Toshiaki Ishibashi

发明人： Satoshi Ukai ,  Ryo Tanaka ,  Toshiaki Ishibashi

IPC分类号： H04R5/00

CPC分类号： H04R3/005 ,  H04R1/406 ,  H04R2201/401 ,  H04R2201/403 ,  H04R2430/23

摘要： An acoustic apparatus without increasing noise etc. even when plural directional microphones collect sounds from a place of the same distances is provided. Sound signals output from the microphone arrays are subjected to phase shift by phase shift circuits 211A to 211H, and the sound signals are combined by an adder 212, The phase shift circuits 211A to 211H performs phase shifts according to installation positions of the microphone arrays. The phase shift circuit 211A makes the shift 0 degree, the phase shift circuit 211B makes the shift 45 degrees, the phase shift circuit 211C makes the shift 90 degrees, and sequentially to the phase shift circuit 211H, the shifts are made according to rotational angles.

摘要翻译： 即使当多个定向麦克风从相同距离的地方收集声音时，也提供了不增加噪声等的声学装置。 从麦克风阵列输出的声音信号由相移电路211A〜211H进行相移，声音信号由加法器212组合。相移电路211A〜211H根据麦克风阵列的安装位置进行相移。 移相电路211A使偏移0度，相移电路211B进行偏移45度，移相电路211C使偏移90度，依次向移相电路211H移动，根据旋转角度 。

公开(公告)号：US20090310794A1

公开(公告)日：2009-12-17

申请号：US12441698

申请日：2007-12-17

申请人： Toshiaki Ishibashi ,  Ryo Tanaka ,  Satoshi Ukai

发明人： Toshiaki Ishibashi ,  Ryo Tanaka ,  Satoshi Ukai

IPC分类号： H04B3/20

CPC分类号： H04M3/56 ,  G10L2021/02082 ,  G10L2021/02161 ,  H04M3/567 ,  H04M3/568 ,  H04M9/082 ,  H04M2250/62 ,  H04R3/02

摘要： To provide an audio conference apparatus and an audio conference system which can smoothly proceed with the audio conference by removing a recursion sound of the conference voice is achieved. An audio conference apparatus 1 outputs ring tones from corresponding channels before a communication control unit 12 outputs audio signals from the unused channels (S1 to S3). Speakers SP1 to SP16 emits the ring tone from predetermined sound source positions corresponding to the respective channels. Microphones MIC1A to MIC16A and microphones MIC1B to MIC16B collect audio signals including a recursion sound of the ring tone. The echo cancel unit 20 generates a pseudo-recursion sound signal on the basis of an input signal, and subtracts the pseudo-recursion sound signal from the collected audio signals. An audio conference system is configured to connect a plurality of the audio conference apparatuses to each other.

摘要翻译： 提供可以通过去除会议语音的递归声音来平滑地进行音频会议的音频会议装置和音频会议系统。 音频会议装置1在通信控制单元12从未使用的信道（S1至S3）输出音频信号之前，从对应的信道输出铃音。 扬声器SP1至SP16从对应于相应通道的预定声源位置发出铃声。 麦克风MIC1A至MIC16A和麦克风MIC1B至MIC16B收集音频信号，包括铃声的递归声音。 回波消除单元20基于输入信号产生伪递归声音信号，并从收集的音频信号中减去伪递归声音信号。 音频会议系统被配置为将多个音频会议装置彼此连接。

公开(公告)号：US20090274318A1

公开(公告)日：2009-11-05

申请号：US12302285

申请日：2007-05-17

申请人： Toshiaki Ishibashi ,  Satoshi Suzuki ,  Ryo Tanaka ,  Satoshi Ukai

发明人： Toshiaki Ishibashi ,  Satoshi Suzuki ,  Ryo Tanaka ,  Satoshi Ukai

IPC分类号： H04R3/00

CPC分类号： H04R3/005 ,  H04M3/56 ,  H04M3/568 ,  H04R27/00

摘要： A audio conference device capable of detecting a talker's direction exactly and collecting a sound emitted from this direction at a high signal S/N ratio is provided. A detecting beam generating portion 811 applies a delay-sum process to sound collecting signal SS104 to SS113 of microphones MIC104 to MIC113 that are aligned densely in a center portion in the alignment direction, and generates detecting sound collecting beam signals MB101 to MB114. A outputting beam generating portion 812 applies a delay-sum process to sound collecting signals SS101 to SS116 of all microphones MIC101 to MIC116 that are aligned in the alignment direction to generate outputting collecting beam signals MB101′ to MB114′. A sound collecting beam selecting portion 19 detects direction data MS corresponding to a sound collecting beam signal, which has the highest signal density, out of the detecting sound collecting beam signals MB101 to MB114, and feeds the sound collecting beam signal to an outputting beam selecting portion 813. The outputting beam selecting portion 813 selects a sound collecting beam signal corresponding to the direction data MS.

摘要翻译： 提供一种能够精确地检测讲话者方向并以高信号S / N比率收集从该方向发出的声音的音频会议装置。 检测光束产生部分811对在对准方向的中心部分密集排列的麦克风MIC104至MIC113的声音采集信号SS104至SS113施加延迟和处理，并产生检测声音采集束信号MB101至MB114。 输出光束产生部分812对在对准方向上排列的所有麦克风MIC101至MIC116的声音收集信号SS101至SS116施加延迟和处理，以产生输出收集束信号MB101'至MB114'。 声音采集束选择部分19从检测声音采集束信号MB101至MB114中检测具有最高信号密度的声音采集束信号的方向数据MS，并将声音采集束信号馈送到输出光束选择 输出光束选择部分813选择与方向数据MS相对应的声音采集束信号。

公开(公告)号：US20090248408A1

公开(公告)日：2009-10-01

申请号：US12306413

申请日：2007-06-20

申请人： Toshiaki Ishibashi ,  Ryo Tanaka ,  Satoshi Ukai

发明人： Toshiaki Ishibashi ,  Ryo Tanaka ,  Satoshi Ukai

IPC分类号： G10L21/02

CPC分类号： H04R3/005 ,  H04M3/56 ,  H04M3/568 ,  H04M2201/18 ,  H04R1/406 ,  H04R2201/403 ,  H04R2430/20

摘要： A voice emitting and collecting device that is capable of picking up/outputting a voice emitted from a talker at a high S/N ratio by eliminating the influence of a diffracting voice despite a simple configuration is provided. A signal differencing circuit 191 outputs difference signals MS1 to MS4 between voice collecting beam signals MB11 to MB14 and voice collecting beam signals MB21 to MB24. A level comparator 195 selects the difference signal having a maximum level. A signal selecting circuit 196 selects voice collecting beam signals MB1x, MB2x of the difference signal MS that is selected/pointed by the level comparator 195. A subtracter 199 subtracts the voice collecting beam signal MB2x from the voice collecting beam signal MB1x, and output a resultant signal. Accordingly, main components of the diffracting voice can be removed from the voice collecting beam signal.

摘要翻译： 提供了一种语音发射和收集装置，其能够通过消除尽管简单配置的衍射语音的影响，以高S / N比来拾取/输出从讲话者发出的语音。 信号差分电路191输出语音采集束信号MB11〜MB14和声音采集束信号MB21〜MB24之间的差信号MS1〜MS4。 电平比较器195选择具有最大电平的差分信号。 信号选择电路196选择由电平比较器195选择/指示的差分信号MS的语音采集束信号MB1x，MB2x。减法器199从语音采集束信号MB1x中减去语音采集束信号MB2x，并输出 结果信号。 因此，可以从声音采集束信号中去除衍射声音的主要成分。

公开(公告)号：US20090147967A1

公开(公告)日：2009-06-11

申请号：US12091406

申请日：2006-07-31

申请人： Toshiaki Ishibashi ,  Ryo Tanaka ,  Satoshi Ukai

发明人： Toshiaki Ishibashi ,  Ryo Tanaka ,  Satoshi Ukai

IPC分类号： H04R3/00 ,  H04M3/42 ,  H04N7/14

CPC分类号： G10L21/02 ,  G10L2021/02087 ,  G10L2021/02166 ,  H04R1/40

摘要： Microphone arrays, which are formed by arranging a plurality of microphones, are provided on a front side and a rear side of a housing, respectively. A virtual focus is set for each of the microphone arrays in a direction opposite to a direction in which sound is picked-up sound signals picked up by the plurality of microphones are delayed such that distances to the virtual focus are the same, and the delayed sound signals are synthesized. Therefore, sound in a sound-pickup area of a predetermined angle on each of the front side and the rear side can be picked up at a high level, and even though there is a noise source in areas other than the sound-pickup area, noise from the noise source is not picked up.

摘要翻译： 通过布置多个麦克风形成的麦克风阵列分别设置在壳体的前侧和后侧。 对于每个麦克风阵列，在与由多个麦克风拾取的拾音声音的方向相反的方向设置虚拟焦点，使得到虚拟焦点的距离相同，并且延迟 合成声音信号。 因此，可以以高水平拾取在前侧和后侧各自的预定角度的声音拾取区域中的声音，并且即使在除了拾音区域之外的区域中存在噪声源， 来自噪声源的噪声不会被拾取。

公开(公告)号：US08526633B2

公开(公告)日：2013-09-03

申请号：US12663220

申请日：2008-05-28

申请人： Satoshi Ukai ,  Ryo Tanaka ,  Toshiaki Ishibashi

发明人： Satoshi Ukai ,  Ryo Tanaka ,  Toshiaki Ishibashi

IPC分类号： H04R3/00

CPC分类号： H04R3/005 ,  H04R1/406 ,  H04R2201/401 ,  H04R2201/403 ,  H04R2430/23

摘要： An acoustic apparatus without increasing noise etc. even when plural directional microphones collect sounds from a place of the same distances is provided. Sound signals output from the microphone arrays are subjected to phase shift by phase shift circuits 211A to 211H, and the sound signals are combined by an adder 212. The phase shift circuits 211A to 211H performs phase shifts according to installation positions of the microphone arrays. The phase shift circuit 211A makes the shift 0 degree, the phase shift circuit 211B makes the shift 45 degrees, the phase shift circuit 211C makes the shift 90 degrees, and sequentially to the phase shift circuit 211H, the shifts are made according to rotational angles.

摘要翻译： 即使当多个定向麦克风从相同距离的地方收集声音时，也提供了不增加噪声等的声学装置。 从麦克风阵列输出的声音信号由相移电路211A至211H进行相移，声音信号由加法器212组合。相移电路211A至211H根据麦克风阵列的安装位置执行相移。 移相电路211A使偏移0度，相移电路211B进行偏移45度，移相电路211C使偏移90度，依次向移相电路211H移动，根据旋转角度 。

公开(公告)号：US08238573B2

公开(公告)日：2012-08-07

申请号：US12091406

申请日：2006-07-31

申请人： Toshiaki Ishibashi ,  Ryo Tanaka ,  Satoshi Ukai

发明人： Toshiaki Ishibashi ,  Ryo Tanaka ,  Satoshi Ukai

IPC分类号： H04R3/00

CPC分类号： G10L21/02 ,  G10L2021/02087 ,  G10L2021/02166 ,  H04R1/40

摘要： Microphone arrays, which are formed by arranging a plurality of microphones, are provided on a front side and a rear side of a housing, respectively. A virtual focus is set for each of the microphone arrays in a direction opposite to a direction in which sound is picked-up sound signals picked up by the plurality of microphones are delayed such that distances to the virtual focus are the same, and the delayed sound signals are synthesized. Therefore, sound in a sound-pickup area of a predetermined angle on each of the front side and the rear side can be picked up at a high level, and even though there is a noise source in areas other than the sound-pickup area, noise from the noise source is not picked up.

摘要翻译： 通过布置多个麦克风形成的麦克风阵列分别设置在壳体的前侧和后侧。 对于每个麦克风阵列，在与由多个麦克风拾取的拾音声音的方向相反的方向设置虚拟焦点，使得到虚拟焦点的距离相同，并且延迟 合成声音信号。 因此，可以以高水平拾取在前侧和后侧各自的预定角度的声音拾取区域中的声音，并且即使在除了拾音区域之外的区域中存在噪声源， 来自噪声源的噪声不会被拾取。