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：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：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：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：US20110208514A1

公开(公告)日：2011-08-25

申请号：US13099687

申请日：2011-05-03

申请人： Yoshiteru Tsuchinaga ,  Yasuji Ota ,  Masanao Suzuki ,  Masakiyo Tanaka ,  Joe Mizuno

发明人： Yoshiteru Tsuchinaga ,  Yasuji Ota ,  Masanao Suzuki ,  Masakiyo Tanaka ,  Joe Mizuno

IPC分类号： G10L19/00

CPC分类号： G10L19/018

摘要： A data embedding device for embedding data in a speech code obtained by encoding a speech in accordance with a speech encoding method based on a voice generation process of a human being, includes an embedding judgment unit, every speech code, judging whether or not data should be embedded in the speech code, and an embedding unit embedding data in two or more parameter codes of a plurality of parameter codes constituting the speech code for which it is judged by the embedding judgment unit that the data should be embedded.

摘要翻译： 一种数据嵌入装置，用于将数据嵌入到根据人的语音产生处理的语音编码方法对语音进行编码而获得的语音码中，包括嵌入判断单元，每个语音码，判断数据是否应该 嵌入在语音码中，以及嵌入单元，将构成嵌入判定单元所判断的语音码的多个参数码的两个以上的参数码嵌入数据，嵌入单元嵌入数据。

公开(公告)号：US07949016B2

公开(公告)日：2011-05-24

申请号：US11111759

申请日：2005-04-22

申请人： Yoshiteru Tsuchinaga ,  Yasuji Ota ,  Masanao Suzuki ,  Masakiyo Tanaka

发明人： Yoshiteru Tsuchinaga ,  Yasuji Ota ,  Masanao Suzuki ,  Masakiyo Tanaka

IPC分类号： H04J3/12

CPC分类号： H04L47/10 ,  H04L47/263 ,  H04L47/38

摘要： Communications from a transmission side to a reception side neither changing the format of voice code data nor requiring another transmission path or increasing the transmission quantity of control information are controlled utilizing information obtained on the reception side. A system includes a first communication equipment provided with a control information embedding unit for embedding control information that is used for a control of communications from a communication partner to the own communication equipment and that is obtained on the own communication equipment side in the communication data to be transmitted to the communication partner side and a second communication equipment provided with a communication control unit for controlling communications to the first communication equipment side using control information transmitted from the first communication equipment.

摘要翻译： 利用在接收侧获得的信息来控制从发送侧到接收侧的通信，既不改变语音代码数据的格式也不需要另一个传输路径或增加控制信息的传输量。 一种系统，包括：第一通信设备，具备控制信息嵌入单元，该控制信息嵌入单元用于将通信对方的通信控制用于本通信设备的控制信息嵌入，并将通信数据中的自身通信设备侧获得的控制信息嵌入到 被发送到通信对方侧，第二通信设备具有通信控制单元，用于使用从第一通信设备发送的控制信息来控制与第一通信设备侧的通信。