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：US08135143B2

公开(公告)日：2012-03-13

申请号：US12093849

申请日：2006-11-10

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： H04R1/403 ,  H04R1/406 ,  H04R3/005 ,  H04R3/12 ,  H04R2201/403 ,  H04R2430/03 ,  H04R2430/20

摘要： A speaker array and microphone arrays positioned on both sides of the speaker array are provided. A plurality of focal points each serving as a position of a talker are set in front of the microphone arrays respectively symmetrically with respect to a centerline of the speaker array, and a bundle of sound collecting beams is output toward the focal points. Difference values between sound collecting beams directed toward the focal points that are symmetrical with respect to the centerline are calculated to cancel sound components that detour from the speaker array to microphones. Then, it is estimated based on totals of squares of peak values of the difference values for a particular time period that the position of the talker is close to which one of the focal points, and the position of the talker is decided by comparing the totals of the squares of the peak values of the sound collecting beams directed to the focal points that are symmetrical mutually.

摘要翻译： 提供了位于扬声器阵列两侧的扬声器阵列和麦克风阵列。 将各个充当讲话者的位置的多个焦点分别相对于扬声器阵列的中心线对称地设置在麦克风阵列的前面，并且向聚焦点输出一束声音采集束。 计算指向相对于中心线对称的焦点的声音收集波束之间的差值，以抵消从扬声器阵列绕行到麦克风的声音分量。 然后，基于特定时间段的差值的峰值的平方值的总和，估计讲话者的位置靠近哪一个焦点，并且通过比较总数来判断讲话者的位置 指向相互对称的焦点的收集波束的峰值的平方的平方。

公开(公告)号：US20090052688A1

公开(公告)日：2009-02-26

申请号：US12093849

申请日：2006-11-10

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： H04R1/403 ,  H04R1/406 ,  H04R3/005 ,  H04R3/12 ,  H04R2201/403 ,  H04R2430/03 ,  H04R2430/20

摘要： A speaker array and microphone arrays positioned on both sides of the speaker array are provided. A plurality of focal points each serving as a position of a talker are set in front of the microphone arrays respectively symmetrically with respect to a centerline of the speaker array, and a bundle of sound collecting beams is output toward the focal points. Difference values between sound collecting beams directed toward the focal points that are symmetrical with respect to the centerline are calculated to cancel sound components that detour from the speaker array to microphones. Then, it is estimated based on totals of squares of peak values of the difference values for a particular time period that the position of the talker is close to which one of the focal points, and the position of the talker is decided by comparing the totals of the squares of the peak values of the sound collecting beams directed to the focal points that are symmetrical mutually.

摘要翻译： 提供了位于扬声器阵列两侧的扬声器阵列和麦克风阵列。 将各个充当讲话者的位置的多个焦点分别相对于扬声器阵列的中心线对称地设置在麦克风阵列的前面，并且向聚焦点输出一束声音采集束。 计算指向相对于中心线对称的焦点的声音收集波束之间的差值，以抵消从扬声器阵列绕行到麦克风的声音分量。 然后，基于特定时间段的差值的峰值的平方值的总和，估计讲话者的位置靠近哪一个焦点，并且通过比较总数来判断讲话者的位置 指向相互对称的焦点的聚光束的峰值的平方的平方。

公开(公告)号：US20100322435A1

公开(公告)日：2010-12-23

申请号：US12085724

申请日：2006-11-29

申请人： Satoshi Suzuki ,  Toshiaki Ishibashi ,  Ryo Tanaka

发明人： Satoshi Suzuki ,  Toshiaki Ishibashi ,  Ryo Tanaka

IPC分类号： H04R3/12

CPC分类号： G01S5/18 ,  G01S5/0027 ,  G01S5/26 ,  H04R1/323 ,  H04R1/403 ,  H04R3/12 ,  H04R2430/01 ,  H04R2430/20 ,  H04S7/301

摘要： A position detecting system is provided, which is capable of effectively preventing erroneous detection of audio to be measured. The position detecting system includes a terminal device that inputs an audio signal from an audio device and a microphone. The audio device sequentially inputs measurement audio signals that have been formed by two or more audio signals of different frequencies to a speaker and receives a notification signal, wherein the report signal indicates that the audio of the measurement audio signal has been collected from the terminal device. The audio device clocks a time t1 and a time t2, namely clocks after the audio of the measurement audio signal is output from the speakers SP1-SP2 until the notification signals of the measurement audio signals are received by the signal receiving unit. The audio device calculates the position of the microphone by using the times t1 and t2. For each frequency component of the measurement audio signal, when an audio signal exceeding a predetermined level is inputted from the microphone, the terminal device detects it as a component of the measurement audio signal and transmits a notification signal upon detection of the measurement audio signal.

摘要翻译： 提供一种位置检测系统，其能够有效地防止要测量的音频的错误检测。 位置检测系统包括从音频设备和麦克风输入音频信号的终端设备。 音频装置将已经由两个或更多个不同频率的音频信号形成的测量音频信号顺序地输入到扬声器并接收通知信号，其中报告信号指示测量音频信号的音频已从终端设备收集 。 音频设备对时间t1和时间t2进行计时，即从扬声器SP1-SP2输出测量音频信号的音频之后的时钟，直到由信号接收单元接收测量音频信号的通知信号。 音频设备使用时间t1和t2计算麦克风的位置。 对于测量音频信号的每个频率分量，当从麦克风输入超过预定电平的音频信号时，终端设备将其作为测量音频信号的分量进行检测，并且在检测到测量音频信号时发送通知信号。

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：US20110110526A1

公开(公告)日：2011-05-12

申请号：US12995650

申请日：2009-06-02

申请人： Toshiaki Ishibashi ,  Ryo Tanaka

发明人： Toshiaki Ishibashi ,  Ryo Tanaka

IPC分类号： H04B3/20

CPC分类号： H04M9/082 ,  H04R3/02

摘要： An adaptive filter generates a pseudo echo sound signal based on a sound emission sound signal. An adder subtracts the pseudo echo sound signal from a low band component of a collected sound signal, thereby generating a sound signal with a first-adjusted low band component. An echo spectrum estimation section estimates and calculates a frequency spectrum of a reverberation echo this time from a spectrum of the pseudo echo sound signal this time, a frequency spectrum of the preceding reverberation echo, and an update coefficient based on an audio environment. An adder subtracts the frequency spectrum of the reverberation echo and the frequency spectrum of stationary noise from a spectrum of the sound signal with the first-adjusted low band component.

摘要翻译： 自适应滤波器基于声音发射声音信号产生伪回声声音信号。 加法器从收集的声音信号的低频带分量中减去伪回声声音信号，从而产生具有第一调整低频带分量的声音信号。 回波谱估计部根据此时的伪回波声音信号的频谱，前一混响回波的频谱以及基于音频环境的更新系数，来估计并计算该混响回波的频谱。 加法器从具有第一调节低频带分量的声音信号的频谱中减去混响回波的频谱和平稳噪声的频谱。

公开(公告)号：US20100165071A1

公开(公告)日：2010-07-01

申请号：US12600400

申请日：2008-05-01

申请人： Toshiaki Ishibashi ,  Ryo Tanaka

发明人： Toshiaki Ishibashi ,  Ryo Tanaka

IPC分类号： H04N7/15

CPC分类号： H04R3/02 ,  H04M9/082 ,  H04N7/142 ,  H04N7/15

摘要： A video conference device capable of suppressing a processing burden of an echo canceller in such a situation that speakers, microphones, and a camera are arranged in close vicinity of a monitor is provided. A preliminary filter portion 18 is provided in a preceding stage of an echo canceller 19. The preliminary filter portion 18 has an LPF 181, a fixed filter 182, and a post processor 183. A controlling portion 14 sets a filter coefficient corresponding to a sound collecting beam signal that a signal selecting portion 17 selected, in the fixed filter 182. This filter coefficient is set to simulate a transfer function of an acoustic transfer system that feedbacks from the speakers to the microphones. A component of a low frequency band (e.g., 1 kHz or less) out of sound signals (input sound signals) being input into the speakers is input into the fixed filter 182, and a pseudo signal is produced. The pseudo signal (feedback component) is removed by the post processor 183, and a corrected sound collecting beam signal MSs is produced.

摘要翻译： 提供一种能够抑制在将扬声器，麦克风和相机布置在监视器附近的情况下的回波消除器的处理负担的视频会议装置。 初级滤波器部分18设置在回波消除器19的前级。预滤波器部分18具有LPF181，固定滤波器182和后处理器183.控制部分14设置对应于声音的滤波器系数 收集在固定滤波器182中信号选择部分17选择的波束信号。该滤波器系数被设置为模拟从扬声器反馈到麦克风的声学传送系统的传递函数。 输入到扬声器的声音信号（输入声音信号）中的低频带（例如，1kHz或更小）的分量被输入到固定滤波器182中，并且产生伪信号。 伪信号（反馈分量）被后处理器183去除，并且产生校正的声音采集束信号MSs。

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：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。