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1. 发明授权

US06665645B1 Speech recognition apparatus for AV equipment 有权
标题翻译： AV设备语音识别装置
公开(公告)号：US06665645B1
公开(公告)日：2003-12-16
申请号：US09627071
申请日：2000-07-27
申请人： Satoru Ibaraki , Takeo Kanamori , Takashi Kawamura , Mikio Oda
发明人： Satoru Ibaraki , Takeo Kanamori , Takashi Kawamura , Mikio Oda
IPC分类号： G10L1102
CPC分类号： G10L15/20 , G10L2021/02082 , G10L2021/02161
摘要： A low-cost speech recognition apparatus for AV equipment capable of speech recognition with high accuracy while 2-channel sound is being produced from loudspeakers is achieved. A monaural conversion part converts 2-channel signals to be inputted to the loudspeakers into a monaural signal. A single echo canceller is provided with an output from a microphone and an output from the monaural conversion part (monaural signal). The echo canceller estimates an echo of multichannel sound based on the monaural signal, and then eliminates the echo sound from the microphone output. Thus, with only a single echo canceller, speech recognition can be carried out while 2-channel sound is being produced from the loudspeakers. Moreover, unlike the case where two echo cancellers are provided, the present invention can prevent the occurrence of mutual interference between the echo cancellers that leads to deterioration in speech recognition performance.
摘要翻译：实现了一种用于AV设备的低成本语音识别装置，其能够在从扬声器产生2声道声音的同时以高精度进行语音识别。单声道转换部分将要输入到扬声器的2声道信号转换为单声道信号。单个回声消除器具有来自麦克风的输出和来自单声道转换部分（单声道信号）的输出。回声消除器基于单声道信号估计多声道声音的回波，然后消除来自麦克风输出的回声。因此，仅使用单个回声消除器，可以在从扬声器产生2声道声音的同时进行语音识别。此外，与提供两个回波消除器的情况不同，本发明可以防止导致语音识别性能劣化的回波消除器之间的相互干扰的发生。

2. 发明授权

US06639986B2 Built-in microphone device 有权
标题翻译：内置麦克风设备
公开(公告)号：US06639986B2
公开(公告)日：2003-10-28
申请号：US09334493
申请日：1999-06-16
申请人： Takeo Kanamori , Takashi Kawamura , Satoru Ibaraki
发明人： Takeo Kanamori , Takashi Kawamura , Satoru Ibaraki
IPC分类号： H04B1500
CPC分类号： H04R3/005
摘要： A built-in microphone device for use in an apparatus having a mechanism section generating internal noise inside a housing of the apparatus includes a main microphone for picking up an external sound; a noise reference microphone for picking up the internal noise; an adaptive filter member for generating a control audio signal based on an output signal from the noise reference microphone using a filter coefficient; a signal subtraction section for subtracting the control audio signal generated by the adaptive filter member from an output signal from the main microphone to generate a subtraction result; and a filter coefficient update control section for receiving an operation signal generated at the time of an operation of the mechanism section, and in response to the operation signal, updating the filter coefficient of the adaptive filter member based on the subtraction result generated by the signal subtraction section and an output signal from the noise reference microphone.
摘要翻译：一种内置的麦克风装置，用于具有在该装置的壳体内产生内部噪声的机构部分的装置，包括用于拾取外部声音的主麦克风; 用于拾取内部噪声的噪声参考麦克风; 自适应滤波器构件，用于使用滤波器系数基于来自噪声参考麦克风的输出信号生成控制音频信号; 信号减法部分，用于从主麦克风的输出信号中减去由自适应滤波器部件产生的控制音频信号以产生减法结果; 以及滤波器系数更新控制部分，用于接收在机构部分的操作时产生的操作信号，并且响应于操作信号，基于由信号产生的减法结果来更新自适应滤波器部件的滤波器系数减法部分和来自噪声参考麦克风的输出信号。

3. 发明授权

US5633935A Stereo ultradirectional microphone apparatus 失效
标题翻译：立体声超方向麦克风设备
公开(公告)号：US5633935A
公开(公告)日：1997-05-27
申请号：US225625
申请日：1994-04-11
申请人： Takeo Kanamori , Junichi Tagawa , Satoru Ibaraki , Hiroki Furukawa , Kiminori Ono
发明人： Takeo Kanamori , Junichi Tagawa , Satoru Ibaraki , Hiroki Furukawa , Kiminori Ono
IPC分类号： H04R3/00 , H04S1/00 , H04R5/00
CPC分类号： H04R3/005 , H04S1/002
摘要： A stereo ultradirectional microphone apparatus for detecting a sound to produce stereo sound signals, comprises: first and second ultradirectional microphones arranged side by side with a given distance in parallel for converting a sound into first and second sound signals respectively, first and second delays for delaying an output of the first and second microphones by a delay time .tau. respectively, and first and second subtractors for subtracting for subtraction between the first sound signal and an output of the second delay and subtracting for subtraction between the second sound signal and an output of the first delay. The delay time .tau. corresponds to a difference between the timings of a sound from a sound source in a direction making a clockwise angel .theta. from the front where a dead angel should be made. The subtraction provides the dead angle. Similarly, a dead angle on the side is also made to obtain a stereo characteristic. The directivity in the frequency characteristic of microphone is equalized to cancel the sensitivity in the dead angle. A stereo apparatus for forming the dead angles with two set of two filters having respective transfer characteristics determined by measurement and an adder is also disclosed.
摘要翻译：一种用于检测声音以产生立体声信号的立体声超方向麦克风装置包括：并排布置给定距离的第一和第二超向量麦克风，用于将声音分别转换成第一和第二声音信号，用于延迟的第一和第二延迟第一和第二麦克风的输出分别为延迟时间τ，以及第一和第二减法器，用于减去第一声音信号和第二延迟的输出之间的减法，并减去第二声音信号与第二声音信号的输出之间的减法第一次延迟延迟时间ττ对应于来自声源的声音的定时之间的差异，该方向从应该制造死角的前方形成顺时针方位角θ的方向。减法提供死角。类似地，还制造了一侧的死角以获得立体声特性。麦克风频率特性的方向性被均衡以抵消死角的灵敏度。还公开了一种用于通过由测量确定的具有各自的传送特性的两组滤波器和加法器形成死角的立体声装置。

4. 发明授权

US5463618A Echo canceller 失效
标题翻译：回音消除器
公开(公告)号：US5463618A
公开(公告)日：1995-10-31
申请号：US249888
申请日：1994-05-26
申请人： Hiroki Furukawa , Junichi Tagawa , Takeo Kanamori , Satoru Ibaraki
发明人： Hiroki Furukawa , Junichi Tagawa , Takeo Kanamori , Satoru Ibaraki
IPC分类号： H04B3/23 , H04M9/08
CPC分类号： H04B3/234 , H04M9/082
摘要： In an echo canceller, a first adaptive filter (1) estimates an impulse response of an echo path between reception and transmission side by an NLMS algorithm to synthesize a pseud echo, while a second adaptive filter (3) determines whether there is an echo path change or a double talk. A voice detector (8) detects a short time power of the received input signal (x) to determine whether far-end speech is present or absent. The voice detector controls the second adaptive filter (3) to execute adaptation of the second adaptive filter for renewal of an impulse response of an echo path when far-end speech is present and otherwise to suspend the adaptation of the second adaptive filter when far-end speech is absent, while a double talk detector (9) controls the first adaptive filter to execute or suspend adaptation of the first adaptive filter according to the determination results of the voice detector.
摘要翻译：在回波消除器中，第一自适应滤波器（1）通过NLMS算法估计接收侧和发送侧之间的回波路径的脉冲响应以合成伪回波，而第二自适应滤波器（3）确定是否存在回波路径改变或双重谈话。语音检测器（8）检测接收的输入信号（x）的短时间功率，以确定是否存在远端语音。语音检测器控制第二自适应滤波器（3）执行第二自适应滤波器的适应，以便在存在远端语音时对回波路径的脉冲响应进行更新，并且当远端语音存在时暂停第二自适应滤波器的自适应，结束语言不存在，而双通话检测器（9）根据语音检测器的确定结果控制第一自适应滤波器来执行或暂停适应第一自适应滤波器。

5. 发明授权

US5058170A Array microphone 失效
标题翻译：阵列麦克风
公开(公告)号：US5058170A
公开(公告)日：1991-10-15
申请号：US473398
申请日：1990-02-01
申请人： Takeo Kanamori , Hiroki Furukawa , Satoru Ibaraki , Michio Matsumoto
发明人： Takeo Kanamori , Hiroki Furukawa , Satoru Ibaraki , Michio Matsumoto
IPC分类号： G10K11/34 , H04R1/40 , H04R3/00 , H04R3/02
CPC分类号： H04R3/005 , G10K11/341 , H04R1/406 , H04R2201/403 , H04R2201/405
摘要： An array microphone is a directional microphone having an improved directional characteric in which both the sensitivity and the sound pressure frequency response are uniform within the recording area and more particularly, the quality and level of sound remain unchanged. The array microphone includes a microphone array including a plurality of microphone units, and a two-dimensional filter for filtering an output of the microphone array in the dimensions of both time and space. When the two-dimensional filter is a digital filter and varied in its two-dimensional filter coefficient and sampling frequency, the array microphone serves as a variable directional microphone whose directional characteristic can be varied with the sound quality and level remaining unchanged throughout the recording area.

6. 发明授权

US4747132A Howling canceller 失效
标题翻译：嚎叫消除者
公开(公告)号：US4747132A
公开(公告)日：1988-05-24
申请号：US719740
申请日：1985-04-03
申请人： Satoru Ibaraki , Hiroki Furukawa , Hiroyuki Naono
发明人： Satoru Ibaraki , Hiroki Furukawa , Hiroyuki Naono
IPC分类号： H04B3/21 , H04R3/02 , H04B3/23
CPC分类号： H04B3/21 , H04R3/02
摘要： A howling canceller includes a group of filters for dividing an output of a microphone into a plurality of frequency bands, a transfer characteristic estimation unit for estimating a transfer characteristic (i.e.-impulse response) of a low frequency range in an echo path extending from a loudspeaker to the microphone, an echo signal estimation unit for producing an approximate echo signal of the low frequency range proceeding from the loudspeaker to the microphone, a subtracter for subtracting an output of the echo signal estimation unit from an output of a low-pass filter of the filters, and an adder for adding an output of the subtracter to outputs of the filters other than the low-pass filter.
摘要翻译：啸声消除器包括一组用于将麦克风的输出分成多个频带的滤波器，传送特性估计单元，用于估计从一个或多个频带延伸的回波路径中的低频范围的传输特性（即，脉冲响应）扬声器，用于产生从扬声器到麦克风的低频范围的近似回波信号的回波信号估计单元，用于从低通滤波器的输出中减去回波信号估计单元的输出的减法器的滤波器，以及用于将减法器的输出与低通滤波器以外的滤波器的输出相加的加法器。

7. 发明授权

US5563954A Microphone apparatus 失效
标题翻译：麦克风设备
公开(公告)号：US5563954A
公开(公告)日：1996-10-08
申请号：US197703
申请日：1994-02-17
申请人： Kiminori Ono , Satoru Ibaraki , Yuji Yamashina
发明人： Kiminori Ono , Satoru Ibaraki , Yuji Yamashina
IPC分类号： H03H17/02 , H03H17/00 , H03H21/00 , H04B3/04 , H04N5/225 , H04R1/40 , H04R3/00 , G10K11/16
CPC分类号： H04R3/005
摘要： A reference microphone is disposed close to a primary microphone through an enclosure wall of an appliance incorporating microphones, and a noise generated by mechanical systems and included in an output of the primary microphone is canceled by an adaptive filter. In a smaller hardware scale than a case of mounting a sensor for noise reference directly to a noise source, a noise component can be canceled more effectively depending on changes of noise environments.
摘要翻译：参考麦克风通过装有麦克风的器具的机壳壁靠近主麦克风设置，并且由机械系统产生的噪声并且包括在主麦克风的输出中的噪声被自适应滤波器取消。在比用于噪声参考的传感器直接安装到噪声源的情况下更小的硬件尺寸，可以根据噪声环境的变化更有效地消除噪声分量。

8. 发明授权

US4127749A Microphone capable of cancelling mechanical generated noise 失效
标题翻译：能消除机械产生噪音的麦克风
公开(公告)号：US4127749A
公开(公告)日：1978-11-28
申请号：US783385
申请日：1977-03-31
申请人： Nobuhisa Atoji , Hiroyuki Naono , Hiroshi Yamamoto , Satoru Ibaraki
发明人： Nobuhisa Atoji , Hiroyuki Naono , Hiroshi Yamamoto , Satoru Ibaraki
IPC分类号： H04R17/02 , H04R7/16 , H04R17/00 , H04R31/00
CPC分类号： H04R17/025 , H04R31/00 , H04R7/16 , Y10S310/80
摘要： A microphone comprises a pair of electroacoustic transducing high polymer piezoelectric semi cylindrical shaped membranes having a single axis of elongation tangent to the curvature mounted in a housing facing each other. The membranes are electrically series connected to each other with a connection between the facing surfaces thereof and are of prescribed polarizations to generate an output which is substantially twice the voltage developed individually from each membrane when said membranes are caused to flex in opposite directions and substantially zero when said membranes are caused to flex in the same direction.
摘要翻译：麦克风包括一对电声转换高分子压电半圆柱形膜，其具有与安装在彼此面对的壳体中的曲率相切的伸长角。膜通过其相对表面之间的连接彼此电连接，并且具有规定的偏振度，以产生输出，该输出基本上是当所述膜在相反方向上弯曲时基本上为每个薄膜单独产生的电压的两倍当所述膜在相同方向上弯曲时。

9. 发明授权

US5526430A Pressure gradient type microphone apparatus with acoustic terminals provided by acoustic passages 失效
标题翻译：压力梯度式麦克风设备，带有由声道提供的声学终端
公开(公告)号：US5526430A
公开(公告)日：1996-06-11
申请号：US283912
申请日：1994-08-03
申请人： Kiminori Ono , Satoru Ibaraki , Yuji Yamashina
发明人： Kiminori Ono , Satoru Ibaraki , Yuji Yamashina
IPC分类号： H04R1/40 , H04R5/00
CPC分类号： H04R1/406
摘要： In a small-sized pressure gradient type microphone apparatus, a plurality of omni-directional microphone units are encased within a microphone holder. A plurality of acoustic passages having first and second ends are provided within the microphone holder for coupling the sound inlets of the plurality of omni-directional microphone units respectively to an outer space of the microphone holder. The second ends of the acoustic passages opened to the outer space of the microphone holder are arranged to be apart from each other at distances larger than distances between the sound inlets of the corresponding microphone units coupled at the first ends of the acoustic passages.
摘要翻译：在小型压力梯度型麦克风装置中，多个全向麦克风单元被封装在麦克风保持器内。多个具有第一和第二端的声音通道设置在麦克风保持器内，用于将多个全向麦克风单元的声音入口分别连接到麦克风保持器的外部空间。通向麦克风保持器的外部空间的声音通道的第二端被布置成在与声音通道的第一端连接的相应麦克风单元的声音入口之间的距离处彼此分开。

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