公开(公告)号：US20050023343A1

公开(公告)日：2005-02-03

申请号：US10802168

申请日：2004-03-17

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： G10L11/00 ,  G10L19/04 ,  H03M7/30 ,  H03M13/09 ,  H04L1/00 ,  G06F17/00 ,  G06K5/00

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：US06470312B1

公开(公告)日：2002-10-22

申请号：US09897839

申请日：2001-07-02

申请人： Masanao Suzuki ,  Yasuji Ota ,  Yoshiteru Tsuchinaga

发明人： Masanao Suzuki ,  Yasuji Ota ,  Yoshiteru Tsuchinaga

IPC分类号： G10L1904

CPC分类号： H03M7/30 ,  G10L19/08

摘要： The invention enables a source speech signal to be coded in an optimal way. An adaptive codebook (Ba) stores a series of signal vectors of a past speech signal. A vector extraction means extracts a signal vector and neighboring vectors adjacent thereto. A high-order long-term prediction synthesis filter produces a long-term predicted speech signal (Sna−1) from the signal vector and its neighboring vectors. A filter coefficients calculation means calculates filter coefficients of the long-term prediction synthesis filter. A perceptual weighting synthesis filter obtains a reproduced coded speech signal (Sna) from the long-term predicted speech signal (Sna−1). An error calculation means calculates the error (En) of the reproduced coded speech signal (Sna) with reference to the speech signal (Sn). A minimum error detection means finds a minimum error point that yields the smallest error among the calculated errors. An optimal value transmission means transmits optimal values including optimal filter coefficients (&bgr;a) and an optimal delay (La) which are the filter coefficients and the lag parameter at the minimum error point.

摘要翻译： 本发明能够以最佳方式对源语音信号进行编码。 自适应码本（Ba）存储过去话音信号的一系列信号矢量。 矢量提取装置提取与其相邻的信号矢量和相邻矢量。 高阶长期预测合成滤波器从信号矢量及其相邻矢量产生长期预测语音信号（Sna-1）。 滤波器系数计算装置计算长期预测合成滤波器的滤波器系数。 感知加权合成滤波器从长期预测语音信号（Sna-1）获得再现的编码语音信号（Sna）。 误差计算装置参照语音信号（Sn）计算再现的编码语音信号（Sna）的误差（En）。 最小误差检测装置找到在所计算的误差中产生最小误差的最小误差点。 最佳值传输装置发送包括最佳滤波器系数（βa）和最佳延迟（La）的最佳值，其是最小误差点处的滤波器系数和滞后参数。

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。

公开(公告)号：US08280727B2

公开(公告)日：2012-10-02

申请号：US12777398

申请日：2010-05-11

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

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

IPC分类号： G10L19/06 ,  G10L21/00 ,  G10L19/14 ,  G10L19/00

CPC分类号： G10L21/038

摘要： A voice band expansion device includes a time-frequency converter that calculates a frequency spectrum of a voice signal having a first frequency band; a separator that extracts, from the frequency spectrum, an envelope amplitude spectrum, a periodic amplitude spectrum, and a random amplitude spectrum; an envelope amplitude spectrum band expander that expands a frequency band to a second frequency band that is different from the first frequency band; a periodic amplitude spectrum band expander that expands a frequency band to the second frequency band; a random amplitude spectrum band expander that expands a frequency band of the random amplitude spectrum to the second frequency band; a broadband spectrum calculator that calculates a broadband frequency spectrum having the first frequency band and the second frequency band; and a frequency-time converter generates a voice signal having the first frequency band and the second frequency band.

摘要翻译： 语音频带扩展装置包括时频转换器，其计算具有第一频带的语音信号的频谱; 从频谱中提取包络幅度谱，周期幅度谱和随机振幅谱的分离器; 将频带扩展到与第一频带不同的第二频带的包络幅度谱带扩展器; 将频带扩展到第二频带的周期性幅度谱带扩展器; 随机振幅谱带扩展器，其将随机振幅频谱的频带扩展到第二频带; 宽带频谱计算器，其计算具有所述第一频带和所述第二频带的宽带频谱; 并且频率 - 时间转换器产生具有第一频带和第二频带的语音信号。

公开(公告)号：US20120189108A1

公开(公告)日：2012-07-26

申请号：US13435077

申请日：2012-03-30

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

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

IPC分类号： H04M1/64

CPC分类号： H04M1/6016

摘要： A voice communication apparatus includes an analysis unit to analyze an outgoing conversation signal transmitted from a user of the voice communication apparatus to another party in communication or an incoming conversation signal from the another party in communication received by the voice communication apparatus, a storage unit to store a voice message to be played back, a mixing unit to perform mixing of the voice message with the incoming conversation signal, and a control unit to control a start timing of the mixing so that the mixing of the voice message with the incoming conversation signal is started between utterances of the user on the basis of an analysis result of the analysis unit.

摘要翻译： 语音通信装置包括：分析单元，用于分析从语音通信装置的用户发送到通信中的另一方的传出对话信号或来自语音通信装置接收的通信中的另一方的来话对话信号;存储单元， 存储要播放的语音消息，混合单元，用于执行语音消息与传入对话信号的混合;以及控制单元，用于控制混合的开始定时，使得语音消息与传入对话信号的混合 基于分析单元的分析结果，在用户的话语之间开始。

公开(公告)号：US08189800B2

公开(公告)日：2012-05-29

申请号：US12724237

申请日：2010-03-15

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

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

IPC分类号： A61F11/06 ,  G10K11/16 ,  H03B29/00

CPC分类号： G10L21/0208 ,  F01N1/065 ,  G10K11/178 ,  G10K2210/12 ,  G10K2210/1282 ,  G10K2210/3025 ,  G10L21/0232

摘要： An active silencer includes: a speaker generating control sound which interferes with noise; a microphone detecting noise remaining after the interference as a remaining noise signal; a sound quality evaluation unit evaluating the sound quality of the remaining noise and output a result of the sound quality evaluation; an actuation signal determination unit determining, according to the result of the sound quality evaluation, the detection timing of the frequency component of the remaining noise signal to be used when the control sound is generated for a plurality of bands of the remaining noise, corresponding to the plurality of bands of a reference signal corresponding to the noise; and a control signal generation unit generating and output a control signal for generation of the control sound depending on a plurality of bands of the determined remaining noise signal and a plurality of bands of the reference signal corresponding to the noise.

摘要翻译： 主动消音器包括：产生干扰噪声的控制声音的扬声器; 麦克风检测干扰后残留的噪声作为剩余噪声信号; 音质评价单元，评价剩余噪声的声音质量，并输出音质评价结果; 致动信号确定单元，根据声音质量评估的结果，确定当对于多个剩余噪声的频带产生控制声音时要使用的剩余噪声信号的频率分量的检测定时，对应于 对应于噪声的参考信号的多个频带; 以及控制信号生成单元，根据所确定的剩余噪声信号的多个频带和与噪声对应的参考信号的多个频带，生成并输出用于产生控制声音的控制信号。

公开(公告)号：US07783481B2

公开(公告)日：2010-08-24

申请号：US10851701

申请日：2004-05-20

申请人： Kaori Endo ,  Takeshi Otani ,  Mitsuyoshi Matsubara ,  Yasuji Ota

发明人： Kaori Endo ,  Takeshi Otani ,  Mitsuyoshi Matsubara ,  Yasuji Ota

IPC分类号： G10L21/02

CPC分类号： G10L21/0208

摘要： A noise reduction apparatus includes an analysis unit for converting input into a signal of a frequency area, a suppression unit for suppressing the signal, and a synthesis unit for synthesizing a signal of a time area. The apparatus further includes an estimation unit for estimating, using the output of the analysis unit, information corresponding to at least pure voice element excluding noise element in an input voice signal as voice information which is the basic voice information for calculation of a suppression gain of a signal, and a unit for calculating a suppression gain corresponding to the output of the estimation unit and the analysis unit and providing it for the suppression unit.

摘要翻译： 降噪装置包括：分析单元，用于将输入转换为频率区域的信号;抑制单元，用于抑制信号;以及合成单元，用于合成时间区域的信号。 该装置还包括：估计单元，用于使用分析单元的输出，将与输入语音信号中除噪声元素之外的至少纯净语音元素相对应的信息作为语音信息，作为用于计算抑制增益的基本语音信息 信号和用于计算与估计单元和分析单元的输出相对应的抑制增益并将其提供给抑制单元的单元。

公开(公告)号：US20050143988A1

公开(公告)日：2005-06-30

申请号：US10851701

申请日：2004-05-20

申请人： Kaori Endo ,  Takeshi Otani ,  Mitsuyoshi Matsubara ,  Yasuji Ota

发明人： Kaori Endo ,  Takeshi Otani ,  Mitsuyoshi Matsubara ,  Yasuji Ota

IPC分类号： G10L15/20 ,  G10L21/02 ,  H03M7/30 ,  H04M1/00 ,  G10L21/00

CPC分类号： G10L21/0208

摘要： A noise reduction apparatus includes an analysis unit for converting input into a signal of a frequency area, a suppression unit for suppressing the signal, and a synthesis unit for synthesizing a signal of a time area. The apparatus further includes an estimation unit for estimating, using the output of the analysis unit, information corresponding to at least pure voice element excluding noise element in an input voice signal as voice information which is the basic voice information for calculation of a suppression gain of a signal, and a unit for calculating a suppression gain corresponding to the output of the estimation unit and the analysis unit and providing it for the suppression unit.

摘要翻译： 降噪装置包括：分析单元，用于将输入转换为频率区域的信号;抑制单元，用于抑制信号;以及合成单元，用于合成时间区域的信号。 该装置还包括：估计单元，用于使用分析单元的输出，将与输入语音信号中除噪声元素之外的至少纯净语音元素相对应的信息作为语音信息，作为用于计算抑制增益的基本语音信息 信号和用于计算与估计单元和分析单元的输出相对应的抑制增益并将其提供给抑制单元的单元。

公开(公告)号：US07974846B2

公开(公告)日：2011-07-05

申请号：US10802168

申请日：2004-03-17

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： G10L21/00

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。