公开(公告)号：US20110211035A1

公开(公告)日：2011-09-01

申请号：US12871018

申请日：2010-08-30

申请人： Yasuji Ota ,  Masanao Suzuki ,  Kaori Endo ,  Takeshi Otani ,  Takaya Yamamoto

发明人： Yasuji Ota ,  Masanao Suzuki ,  Kaori Endo ,  Takeshi Otani ,  Takaya Yamamoto

IPC分类号： H04N7/14

CPC分类号： H04S7/303 ,  H04M1/6016 ,  H04M2250/52 ,  H04S2400/13

摘要： A communication apparatus includes an image capturing unit configured to capture a face image of a user; a contour extraction unit configured to extract a face contour from the face image captured by the image capturing unit; an ear position estimation unit configured to estimate positions of ears of the user on the basis of the extracted face contour; a distance estimation unit configured to estimate a distance between the communication apparatus and the user on the basis of the extracted face contour; a sound output unit configured to output sound having a directivity; and a control unit configured to control an output range of sound output from the sound output unit on the basis of the positions of ears of the user estimated by the ear position estimation unit and the distance between the communication apparatus and the user estimated by the distance estimation unit.

摘要翻译： 通信装置包括被配置为捕获用户的脸部图像的图像捕获单元; 轮廓提取单元，被配置为从由所述图像捕获单元捕获的所述面部图像提取面部轮廓; 耳位置估计单元，被配置为基于所提取的面部轮廓来估计用户的耳朵的位置; 距离估计单元，被配置为基于所提取的面部轮廓来估计所述通信装置和所述用户之间的距离; 声音输出单元，被配置为输出具有方向性的声音; 以及控制单元，其被配置为基于由所述耳位置估计单元估计的所述用户的耳朵的位置以及所述通信装置与所述用户之间的距离估计的距离来控制从所述声音输出单元输出的声音的输出范围 估计单位

公开(公告)号：US20120078632A1

公开(公告)日：2012-03-29

申请号：US13158812

申请日：2011-06-13

申请人： Taro Togawa ,  Shusaku Ito ,  Takeshi Otani ,  Masanao Suzuki ,  Yasuji Ota

发明人： Taro Togawa ,  Shusaku Ito ,  Takeshi Otani ,  Masanao Suzuki ,  Yasuji Ota

IPC分类号： G10L13/00

CPC分类号： G10L21/038 ,  G10L25/27

摘要： An optical device includes a fast Fourier transform (FFT) unit, a signal noise ratio (SNR) calculation processing unit, a band selecting unit, an extension-signal creating unit, an addition unit, and an inverse fast Fourier transform (IFFT) unit. The FFT unit performs the Fourier transform on an input signal that is input from the outside. The SNR calculation processing unit calculates an SNR with respect to each of bands in the input signal. The band selecting unit selects a band of which SNR exceeds a threshold and is the maximum SNR, based on respective SNRs of the bands. The extension-signal creating unit creates an extension signal based on a signal acquired by the band selecting unit. The addition unit adds the extension signal to the input signal, and creates a band-extended signal. The IFFT unit performs the inverse fast Fourier transform on the band-extended signal, and creates an output signal.

摘要翻译： 光学装置包括快速傅立叶变换（FFT）单元，信号噪声比（SNR）计算处理单元，频带选择单元，扩展信号创建单元，加法单元和快速傅里叶逆变换（IFFT）单元 。 FFT单元对从外部输入的输入信号进行傅里叶变换。 SNR计算处理单元针对输入信号中的每个频带计算SNR。 频带选择单元基于频带的相应SNR来选择SNR超过阈值的频带并且是最大SNR。 扩展信号创建单元基于由频带选择单元获取的信号来创建扩展信号。 加法单元将扩展信号添加到输入信号，并产生频带扩展信号。 IFFT单元对频带扩展信号进行快速傅立叶反变换，并产生输出信号。

公开(公告)号：US20080118055A1

公开(公告)日：2008-05-22

申请号：US11863536

申请日：2007-09-28

申请人： Takeshi Otani ,  Masanao Suzuki ,  Yasuji Ota

发明人： Takeshi Otani ,  Masanao Suzuki ,  Yasuji Ota

IPC分类号： H04M9/08

CPC分类号： H04B3/23

摘要： In an echo processing method and device which can detect an accurate echo section without effects of a far end signal, an echo delay, and a reduction of an echo cancellation amount, a signal of a specified frequency band is generated in conformity with a near end signal, and the signal of the specified frequency band is added to the near end signal to form a transmitting signal. Receiving signals are separated into the signal of the specified frequency band and a signal of a band other than the specified frequency band. An echo section is detected based on the signal of the specified frequency band separated. An echo component in the signal of the band other than the specified frequency band is removed and a level of the echo component is detected based on the near end signal in the echo section. Each step may be performed with a digital signal, the transmitting signal may be converted into an analog signal to be inputted to a 2-wire/4-wire converter, the receiving signal may be outputted from the 2-wire/4-wire converter to be converted into the digital signal.

摘要翻译： 在不影响远端信号，回波延迟和回波消除量的降低的情况下能够检测精确回波部的回波处理方法和装置中，根据近端产生特定频带的信号 信号，将特定频带的信号加到近端信号上，形成发送信号。 接收信号被分离成指定频带的信号和除指定频带之外的频带的信号。 基于分离的指定频带的信号来检测回波部分。 除去指定频带之外的频带的信号中的回波分量，并且基于回波部分中的近端信号来检测回波分量的电平。 每个步骤可以用数字信号执行，发送信号可以被转换为要输入到2线/ 4线转换器的模拟信号，接收信号可以从2线/ 4线转换器 被转换为数字信号。

公开(公告)号：US08208623B2

公开(公告)日：2012-06-26

申请号：US11863536

申请日：2007-09-28

申请人： Takeshi Otani ,  Masanao Suzuki ,  Yasuji Ota

发明人： Takeshi Otani ,  Masanao Suzuki ,  Yasuji Ota

IPC分类号： H04M9/08 ,  H04B3/20 ,  H04W74/00 ,  A61F11/06

CPC分类号： H04B3/23

摘要： In an echo processing method and device which can detect an accurate echo section without effects of a far end signal, an echo delay, and a reduction of an echo cancellation amount, a signal of a specified frequency band is generated in conformity with a near end signal, and the signal of the specified frequency band is added to the near end signal to form a transmitting signal. Receiving signals are separated into the signal of the specified frequency band and a signal of a band other than the specified frequency band. An echo section is detected based on the signal of the specified frequency band separated. An echo component in the signal of the band other than the specified frequency band is removed and a level of the echo component is detected based on the near end signal in the echo section. Each step may be performed with a digital signal, the transmitting signal may be converted into an analog signal to be inputted to a 2-wire/4-wire converter, the receiving signal may be outputted from the 2-wire/4-wire converter to be converted into the digital signal.

摘要翻译： 在不影响远端信号，回波延迟和回波消除量的降低的情况下能够检测精确回波部的回波处理方法和装置中，根据近端产生特定频带的信号 信号，将特定频带的信号加到近端信号上，形成发送信号。 接收信号被分离成指定频带的信号和除指定频带之外的频带的信号。 基于分离的指定频带的信号来检测回波部分。 除去指定频带之外的频带的信号中的回波分量，并且基于回波部分中的近端信号来检测回波分量的电平。 每个步骤可以用数字信号执行，发送信号可以被转换为要输入到2线/ 4线转换器的模拟信号，接收信号可以从2线/ 4线转换器 被转换为数字信号。

公开(公告)号：US20120095755A1

公开(公告)日：2012-04-19

申请号：US13330100

申请日：2011-12-19

申请人： Takeshi Otani ,  Taro Togawa ,  Masanao Suzuki ,  Yasuji Ota

发明人： Takeshi Otani ,  Taro Togawa ,  Masanao Suzuki ,  Yasuji Ota

IPC分类号： G10L21/02

CPC分类号： H04R3/00 ,  G10L21/0208 ,  G10L21/0216 ,  G10L25/00 ,  G10L25/18 ,  G10L2025/932 ,  H04R2430/03 ,  H04R2499/11

摘要： An audio signal processing system including a time-frequency conversion unit which converts an audio signal in time domain into frequency domain in frame units so as to calculate a frequency spectrum of the audio signal, a spectral change calculation unit which calculates an amount of change between a frequency spectrum of a first frame and a frequency spectrum of a second frame before the first frame based on the frequency spectrum of the first frame and the frequency spectrum of the second frame, and a judgment unit which judges the type of the noise which is included in the audio signal of the first frame in accordance with the amount of spectral change.

摘要翻译： 一种音频信号处理系统，包括时间 - 频率转换单元，其将时域中的音频信号以帧为单位转换成频域，以便计算音频信号的频谱;频谱变化计算单元，其计算 基于第一帧的频谱和第二帧的频谱的第一帧的频谱和第一帧之前的第二帧的频谱，以及判断单元，其判断噪声的类型是 根据光谱变化量包括在第一帧的音频信号中。

公开(公告)号：US20100273522A1

公开(公告)日：2010-10-28

申请号：US12659850

申请日：2010-03-23

申请人： Yasuji Ota ,  Masanao Suzuki ,  Kaori Endo ,  Takeshi Otani ,  Taro Togawa

发明人： Yasuji Ota ,  Masanao Suzuki ,  Kaori Endo ,  Takeshi Otani ,  Taro Togawa

IPC分类号： H04W88/02 ,  H04R29/00

CPC分类号： H04R3/00 ,  H04R2410/05 ,  H04R2420/07 ,  H04W8/005 ,  H04W24/00 ,  H04W24/10 ,  H04W88/02

摘要： In a wireless communication apparatus, an ambient apparatus number measurement unit measures the number of wireless apparatuses existing around. A movement amount measurement unit detects acceleration at the time when its own apparatus moves and measures the movement amount of its own apparatus. An ambient sound analysis unit records ambient sounds and analyzes the recorded ambient sounds to generate ambient sound analysis information. A communication controller estimates surroundings of its own apparatus based on at least one of the number of the measured wireless apparatuses, the measured movement amount, and the ambient sound analysis information, and autonomously performs a communication control of its own apparatus according to the estimated surroundings.

摘要翻译： 在无线通信装置中，环境设备号测量单元测量周围存在的无线设备的数量。 移动量测量单元检测自身装置移动时的加速度，并测量其本身装置的移动量。 环境声音分析单元记录环境声音并分析所记录的环境声音以产生环境声音分析信息。 通信控制器基于所测量的无线设备的数量，测量的移动量和环境声音分析信息中的至少一个来估计其自己的设备的环境，并且根据估计的环境自主地执行其自己的设备的通信控制 。

公开(公告)号：US08676571B2

公开(公告)日：2014-03-18

申请号：US13330100

申请日：2011-12-19

申请人： Takeshi Otani ,  Taro Togawa ,  Masanao Suzuki ,  Yasuji Ota

发明人： Takeshi Otani ,  Taro Togawa ,  Masanao Suzuki ,  Yasuji Ota

IPC分类号： G10L21/02

CPC分类号： H04R3/00 ,  G10L21/0208 ,  G10L21/0216 ,  G10L25/00 ,  G10L25/18 ,  G10L2025/932 ,  H04R2430/03 ,  H04R2499/11

摘要： An audio signal processing system including a time-frequency conversion unit which converts an audio signal in time domain into frequency domain in frame units so as to calculate a frequency spectrum of the audio signal, a spectral change calculation unit which calculates an amount of change between a frequency spectrum of a first frame and a frequency spectrum of a second frame before the first frame based on the frequency spectrum of the first frame and the frequency spectrum of the second frame, and a judgment unit which judges the type of the noise which is included in the audio signal of the first frame in accordance with the amount of spectral change.

摘要翻译： 一种音频信号处理系统，包括时间 - 频率转换单元，其将时域中的音频信号以帧为单位转换成频域，以便计算音频信号的频谱;频谱变化计算单元，其计算 基于第一帧的频谱和第二帧的频谱的第一帧的频谱和第一帧之前的第二帧的频谱，以及判断单元，其判断噪声的类型是 根据光谱变化量包括在第一帧的音频信号中。

公开(公告)号：US20050108004A1

公开(公告)日：2005-05-19

申请号：US10785238

申请日：2004-02-24

申请人： Takeshi Otani ,  Masanao Suzuki ,  Yasuji Ota

发明人： Takeshi Otani ,  Masanao Suzuki ,  Yasuji Ota

IPC分类号： G10L11/02 ,  G10L15/04 ,  G10L15/18 ,  G10L21/02 ,  H04B7/015 ,  H04M1/00 ,  G10L19/02

CPC分类号： G10L25/78 ,  G10L15/1807

摘要： A voice activity detector that detects talkspurts in a given signal at a high accuracy, so as to improve the quality of voice communication. A frequency spectrum calculator calculates frequency spectrum of a given input signal. A flatness evaluator evaluates the flatness of this power spectrum by, for example, calculating the average of power spectral components and then adding up the differences between those components and the average. The resultant sum of differences, in this case, is used as a flatness factor of the spectrum. A voice/noise discriminator determines whether the input signal contains a talkspurt or not, by comparing the flatness factor of the frequency spectrum with a predetermined threshold.

摘要翻译： 一种语音活动检测器，其以高精度检测给定信号中的对讲频率，以提高语音通信的质量。 频谱计算器计算给定输入信号的频谱。 平坦度评估器通过例如计算功率谱分量的平均值，然后将这些分量之间的差值与平均值相加来评估该功率谱的平坦度。 在这种情况下，得到的差值之和被用作光谱的平坦因子。 语音/噪声识别器通过将频谱的平坦度与预定阈值进行比较来确定输入信号是否包含对话突发信号。

公开(公告)号：US08751221B2

公开(公告)日：2014-06-10

申请号：US12408812

申请日：2009-03-23

申请人： Kaori Endo ,  Yasuji Ota ,  Takeshi Otani ,  Taro Togawa

发明人： Kaori Endo ,  Yasuji Ota ,  Takeshi Otani ,  Taro Togawa

IPC分类号： G10L11/06

CPC分类号： H03G3/32 ,  G10L21/0364

摘要： A communication apparatus for adjusting a received voice signal in accordance with an ambient noise, the communication apparatus includes: a microphone for receiving an ambient noise and input voice and outputting a voice input signal corresponding to a level of the input voice and the ambient noise; a receiver for receiving the voice signal; a processer for extracting a voice component originated by a sender and an ambient noise component originated by the ambient noise, determining the ratio between the voice component and the ambient noise component, and adjusting the amplitude of the received voice signal in accordance with the ratio; and a speaker for outputting a reception voice corresponding to the adjusted reception voice signal.

摘要翻译： 一种用于根据环境噪声调整接收到的语音信号的通信装置，所述通信装置包括：麦克风，用于接收环境噪声和输入声音，并输出与所述输入语音的电平和所述环境噪声相对应的语音输入信号; 用于接收语音信号的接收机; 用于提取由发送者产生的语音分量的处理器和由环境噪声产生的环境噪声分量，确定语音分量与环境噪声分量之间的比率，以及根据该比率调整接收的语音信号的幅度; 以及扬声器，用于输出与经调整的接收语音信号相对应的接收语音。

公开(公告)号：US08392199B2

公开(公告)日：2013-03-05

申请号：US12470233

申请日：2009-05-21

申请人： Takeshi Otani ,  Masakiyo Tanaka ,  Yasuji Ota ,  Shusaku Ito

发明人： Takeshi Otani ,  Masakiyo Tanaka ,  Yasuji Ota ,  Shusaku Ito

IPC分类号： G10L19/00

CPC分类号： H04L1/20 ,  G10L21/02 ,  H03G3/002

摘要： A clipping detection device calculates an amplitude distribution of an input signal for each predetermined period, calculates a deflection degree of the distribution on the basis of the calculated amplitude distribution, and then detects clipping of a communication signal on the basis of the calculated deflection degree of the distribution.

摘要翻译： 剪辑检测装置针对每个预定周期计算输入信号的幅度分布，基于计算出的幅度分布来计算分布的偏转度，然后基于计算出的偏转程度来检测通信信号的限幅 分配。