公开(公告)号：US20070265840A1

公开(公告)日：2007-11-15

申请号：US11826122

申请日：2007-07-12

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

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

IPC分类号： G10L19/14 ,  G10L21/00

CPC分类号： G10L21/0208 ,  G10L25/48 ,  G10L25/78

摘要： In a signal processing method and device which enhance a following speed of an estimated noise in a steep rise section of a noise level and generate little estimation error of a noise spectrum due to an influence of voice in a voice section, a time domain signal that is sampled data of an input signal is extracted, the time domain signal is converted into a frequency domain signal per frame, and an input spectrum is calculated. Furthermore, a minimum value of the input spectrum is acquired, so that a noise spectrum that is a frequency domain signal of a noise component included in the input voice signal is estimated. Moreover, the input spectrum is compared with the noise spectrum, so that whether a section is in a noise section or a mixed section where voice and noise are mixed is determined.

摘要翻译： 在噪声电平的急剧上升部分中增强估计噪声的跟随速度的信号处理方法和装置中，由于语音部分中的语音的影响而产生的噪声频谱的估计误差很小，时域信号 提取输入信号的采样数据，将时域信号每帧转换成频域信号，并计算输入频谱。 此外，获取输入频谱的最小值，从而估计作为包括在输入语音信号中的噪声成分的频域信号的噪声谱。 此外，将输入频谱与噪声频谱进行比较，从而确定是否在噪声部分或混合声音和噪声的混合部分中。

公开(公告)号：US20070232257A1

公开(公告)日：2007-10-04

申请号：US11727062

申请日：2007-03-23

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

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

IPC分类号： H04Q7/20

CPC分类号： G10L21/0208 ,  G10L25/18

摘要： A noise suppressor includes a frequency division part dividing an input signal into bands and outputting band signals; an amplitude calculation part determining amplitude components of the band signals; a noise estimation part estimating an amplitude component of noise contained in the input signal and determining an estimated noise amplitude component for each band; a weighting factor generation part generating a different weighting factor for each band; an amplitude smoothing part determining smoothed amplitude components that are the amplitude components of the band signals temporally smoothed using the weighting factors; a suppression calculation part determining a suppression coefficient from the smoothed amplitude component and the estimated noise amplitude component for each band; a noise suppression part suppressing the band signals based on the suppression coefficients; and a frequency synthesis part synthesizing and outputting the band signals of the bands after the noise suppression output from the noise suppression part.

摘要翻译： 噪声抑制器包括将输入信号划分为频带并输出频带信号的分频部分; 振幅计算部，确定所述频带信号的振幅分量; 噪声估计部，估计输入信号中包含的噪声的幅度分量，并确定每个频带的估计噪声振幅分量; 为每个频带产生不同加权系数的加权因子产生部分; 确定作为使用所述加权因子暂时平滑的所述频带信号的幅度分量的平滑幅度分量的振幅平滑部分; 抑制计算部分，根据平滑的振幅分量和每个频带的估计噪声振幅分量确定抑制系数; 基于抑制系数抑制频带信号的噪声抑制部; 以及频率合成部，其合成并输出从噪声抑制部输出的噪声抑制之后的频带的频带信号。

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：US20120158403A1

公开(公告)日：2012-06-21

申请号：US13409544

申请日：2012-03-01

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： G10L19/14

CPC分类号： G10L21/04

摘要： A voice reproduction apparatus includes an ambient sound analysis unit to analyze a characteristic of an ambient sound, a characteristic analysis unit to analyze an acoustic characteristic of a signal for reproduction, a reproduction timing adjusting unit to record the signal for reproduction and to read the signal for reproduction at a reproduction timing of follow-up reproduction, a reproduction speed changing unit to change a reproduction speed of the read signal for reproduction, and a control unit to control the reproduction timing adjusting unit so that the signal for reproduction is reproduced at the reproduction timing corresponding to an analysis result of the ambient sound analysis unit and to control the reproduction speed changing unit so that the signal for reproduction is reproduced at the reproduction speed corresponding to the analysis result of the ambient sound analysis unit and the acoustic characteristic obtained by the characteristic analysis unit.

摘要翻译： 语音再现装置包括：环境声音分析单元，用于分析环境声音的特性;特征分析单元，分析用于再现的信号的声学特性;再现定时调整单元，用于记录用于再现的信号，并读取信号 用于在后续再现的再现定时中再现的再现速度改变单元，用于改变用于再现的读取信号的再现速度的再现速度改变单元，以及控制单元，用于控制再现定时调整单元，使得再现信号在 再现定时对应于环境声音分析单元的分析结果，并且控制再现速度改变单元，使得用于再现的信号以与环境声音分析单元的分析结果对应的再现速度再现，并且由 特征分析单元。

公开(公告)号：US20110190651A1

公开(公告)日：2011-08-04

申请号：US13085737

申请日：2011-04-13

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

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

IPC分类号： A61B5/11

CPC分类号： A61B7/003 ,  A61B5/0816 ,  A61B5/103 ,  A61B5/4818

摘要： In an apnea detecting apparatus, a respiratory pace analyzer determines a respiratory pace of a user based on an ambient noise (including a breathing sound, a snore, and the like of the user) generated in a surrounding area and on information of a posture of the user in determining whether or not the user suffers from the apnea syndrome. Then, an apnea time extracting unit in the apnea detecting apparatus determines whether or not a silent time is included in a time period during which the user is estimated to be breathing based on the respiratory pace and the silent time in the ambient noise.

摘要翻译： 在呼吸暂停检测装置中，呼吸步速分析仪基于周围区域产生的环境噪声（包括用户的呼吸声，打鼾等）和姿势信息来确定用户的呼吸速度 用户确定用户是否患有呼吸暂停综合征。 然后，呼吸暂停检测装置中的呼吸暂停时间提取部，根据环境噪声中的呼吸速度和无声时间，判断在用户估计呼吸的时间段内是否包含静音时间。

公开(公告)号：US08526578B2

公开(公告)日：2013-09-03

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：US08155333B2

公开(公告)日：2012-04-10

申请号：US12360213

申请日：2009-01-27

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

CPC分类号： G10K11/178 ,  G10K2210/1282 ,  G10K2210/3032

摘要： An active noise control apparatus that controls by a control sound a noise which is output from a noise source, includes: a control sound generating section which inputs a control signal, and produce the control sound; a residual noise detecting section which detects, as a residual noise signal, a noise remaining after the noise control by the control sound; a control signal generating section which inputs, as a reference signal, a signal concerning the noise or the generation state of the noise, and generates the control signal; and a controlling section which inputs the control signal and the residual noise signal, detects the components that cannot be identified in the control signal generating section, and controls the generation of the control signal in the control signal generating section.

摘要翻译： 一种主动噪声控制装置，其通过控制声音控制从噪声源输出的噪声，包括：控制声音产生部，其输入控制信号，并产生控制声; 剩余噪声检测部分，通过控制声音检测噪声控制之后剩余的噪声作为残留噪声信号; 控制信号生成部，其输入与噪声或噪声的生成状态有关的信号作为参考信号，生成控制信号; 以及输入控制信号和残留噪声信号的控制部，检测在控制信号生成部中不能识别的成分，并控制控制信号生成部中的控制信号的生成。

公开(公告)号：US08005219B2

公开(公告)日：2011-08-23

申请号：US11878304

申请日：2007-07-23

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

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

IPC分类号： H04L9/00

CPC分类号： H04L9/0827

摘要： A data decryption apparatus that decrypts encrypted data, includes a first data-receiving unit that receives a first data set, in which information on an encryption specification is embedded, through a first communication path; a time-information obtaining unit that obtains time information on a reception of the first data set by the first data receiving unit; a time-information storage unit that stores the time information with the information on the encryption specification associated therewith; a second data-receiving unit that receives a second data set through a second communication path, the second data set being encrypted based on the encryption-specification and appended by time information on performing data encryption; and an encryption-specification selecting unit that selects an encryption specification for use in decryption of the second data set based on the time information stored in the time-information storage unit and the time information appended to the second data set.

摘要翻译： 一种解密加密数据的数据解密装置，包括第一数据接收单元，其通过第一通信路径接收其中嵌入有加密规范的信息的第一数据集; 时间信息获取单元，其获得由所述第一数据接收单元接收到的所述第一数据集合的时间信息; 时间信息存储单元，其存储具有与其相关联的加密规范的信息的时间信息; 第二数据接收单元，其通过第二通信路径接收第二数据集，所述第二数据集基于所述加密规范被加密，并且附加有关于执行数据加密的时间信息; 以及加密规范选择单元，其基于存储在时间信息存储单元中的时间信息和附加到第二数据集的时间信息来选择用于第二数据集的解密的加密规范。

公开(公告)号：US20100318350A1

公开(公告)日：2010-12-16

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

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。