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1. 发明授权

US08761406B2 Audio signal processing device and audio signal processing method 有权
标题翻译：音频信号处理装置和音频信号处理方法
公开(公告)号：US08761406B2
公开(公告)日：2014-06-24
申请号：US12485191
申请日：2009-06-16
申请人： Kazunobu Ohkuri , Kohei Asada , Shiro Suzuki , Tetsunori Itabashi , Hiroki Kawanishi
发明人： Kazunobu Ohkuri , Kohei Asada , Shiro Suzuki , Tetsunori Itabashi , Hiroki Kawanishi
IPC分类号： H03G3/20 , H03G5/00 , H03G9/00 , H03G7/00 , H03B29/00 , G10K11/16
CPC分类号： G10L21/0208 , H03G3/32 , H03G9/005 , H03G9/10
摘要： An audio signal processing device includes: a microphone configured to collect noise; an analyzing unit configured to analyze an audio signal collected by the microphone to detect the level and frequency property of the collected audio signal; and a signal processing unit configured to subject an audio signal to be reproduced to signal processing based on the analysis results of the analyzing unit.
摘要翻译：音频信号处理装置包括：被配置为收集噪声的麦克风; 分析单元，被配置为分析由麦克风收集的音频信号，以检测所收集的音频信号的电平和频率属性; 以及信号处理单元，被配置为基于分析单元的分析结果对要再现的音频信号进行信号处理。

2. 发明授权

US08199936B2 Signal converter, output amplifying device, audio apparatus, and transmitting and receiving system 有权
标题翻译：信号转换器，输出放大装置，音响装置以及发射和接收系统
公开(公告)号：US08199936B2
公开(公告)日：2012-06-12
申请号：US10967529
申请日：2004-10-18
申请人： Kohei Asada , Tetsunori Itabashi
发明人： Kohei Asada , Tetsunori Itabashi
IPC分类号： H04R3/00
CPC分类号： H03F3/217 , H03F3/68 , H03F2200/331 , H04R3/02
摘要： Four speakers are matrix-connected to each other and a conversion circuit for converting audio signals of four channels into pulse width modulation signals of four channels that are time-divided so as to be complementary to matrix connection are provided. Four class-D output amplifiers receive the corresponding pulse width modulation signals output from the conversion circuit and outputs from the output amplifiers are supplied to the speakers.
摘要翻译：提供四个扬声器彼此矩阵连接，并且提供用于将四个通道的音频信号转换成四个通道的脉冲宽度调制信号的转换电路，该四个通道被时分以便与矩阵连接互补。四个D类输出放大器接收从转换电路输出的对应的脉冲宽度调制信号，输出放大器的输出被提供给扬声器。

3. 发明授权

US08111831B2 Acoustic apparatus, time delay computation method, and recording medium 有权
标题翻译：声学装置，时间延迟计算方法和记录介质
公开(公告)号：US08111831B2
公开(公告)日：2012-02-07
申请号：US11410881
申请日：2006-04-25
申请人： Kohei Asada , Tetsunori Itabashi
发明人： Kohei Asada , Tetsunori Itabashi
IPC分类号： H04R29/00 , H04R5/02
CPC分类号： H04S7/301
摘要： An acoustic apparatus includes a positive value conversion section configured to convert, into a positive value, a response signal obtained by collecting a test signal emitted from a speaker using a microphone; a detection section configured to detect a first transient response part that becomes a first mountain portion of the converted response signal; an estimation section configured to estimate a rise point of the converted response signal from at least N points that contain a peak position of the first transient response part or the vicinity thereof; and a computation section configured to compute a time delay of audio collected by the microphone based on the estimated rise point and on a timing at which the test signal is generated.
摘要翻译：声学装置包括：正值转换部分，被配置为将使用麦克风收集从扬声器发出的测试信号获得的响应信号转换成正值; 检测部，被配置为检测变换为响应信号的第一山部的第一瞬态响应部; 估计部分，被配置为从包含第一瞬态响应部分或其附近的峰值位置的至少N个点估计转换的响应信号的上升点; 以及计算部分，被配置为基于所估计的上升点和产生测试信号的定时来计算麦克风收集的音频的时间延迟。

4. 发明授权

US08107637B2 Signal processing device and signal processing method 有权
标题翻译：信号处理装置及信号处理方法
公开(公告)号：US08107637B2
公开(公告)日：2012-01-31
申请号：US12431996
申请日：2009-04-29
申请人： Kohei Asada , Tetsunori Itabashi , Noriyuki Ozawa
发明人： Kohei Asada , Tetsunori Itabashi , Noriyuki Ozawa
IPC分类号： G10K11/16
CPC分类号： G10K11/178 , G10K2210/1081 , G10K2210/3028
摘要： A signal processing device includes: a filter processing unit configured to execute noise reduction operations by subjecting sound-collected signals from a sound-collecting unit to filtering processing based on preset filter properties and providing with signal properties for noise reduction; a noise-unreduced signal obtaining unit configured to obtain noise-unreduced signals obtained in a state where noise reduction operations by the filter processing unit are stopped; and a filter property selecting unit configured to obtain a difference between the noise-unreduced signals and noise-reduced signals obtained at the time of executing noise reduction operations with preset filter properties set to the filter processing unit as a candidate filter property, thereby obtaining a noise reduction effect indicator regarding the candidate filter property, and selecting filter properties to be set to the filter processing unit based on the noise reduction effect indicator.
摘要翻译：信号处理装置包括：滤波处理单元，被配置为通过使来自声音采集单元的声音采集信号基于预设滤波器特性进行滤波处理并提供用于降噪的信号特性来执行降噪操作; 噪声消除信号获取单元，被配置为获得在由所述滤波处理单元进行的噪声降低操作停止的状态下获得的噪声消除信号; 以及滤波器特性选择单元，其被配置为获得噪声消除信号和在执行降噪操作时获得的噪声降低信号之间的差值，其中设置为过滤处理单元的预设滤波器特性作为候选滤波器特性，从而获得关于候选滤波器特性的降噪效果指示器，以及基于降噪效果指示器选择要设置到滤波处理单元的滤波器特性。

5. 发明授权

US08306236B2 Sound field measuring apparatus and sound field measuring method 失效
标题翻译：声场测量仪和声场测量方法
公开(公告)号：US08306236B2
公开(公告)日：2012-11-06
申请号：US11486333
申请日：2006-07-13
申请人： Kohei Asada , Tetsunori Itabashi
发明人： Kohei Asada , Tetsunori Itabashi
IPC分类号： H04R29/00
CPC分类号： H04R29/00 , H04R2205/024
摘要： A sound field measuring apparatus includes a microphone set having a first and second microphones arranged at a prescribed interval, which collects audio signals outputted from a first and second speakers, a measuring unit measuring distances between the first and second speakers, and the first and second microphones based on audio signals collected by the first and second microphones, and a position calculating unit calculating a position of the first and second microphones and a position of the second speaker when the first speaker is taken as a reference position based on the respective measured distances.
摘要翻译：声场测量装置包括具有以规定间隔布置的第一麦克风和第二麦克风的麦克风组，其收集从第一和第二扬声器输出的音频信号，测量单元，测量第一和第二扬声器之间的距离，以及第一和第二扬声器基于由第一和第二麦克风收集的音频信号的麦克风，以及位置计算单元，其基于各个测量距离将第一扬声器作为基准位置计算第一和第二麦克风的位置和第二扬声器的位置。

6. 发明授权

US08280075B2 Apparatus, method and program for processing signal and method for generating signal 失效
标题翻译：用于处理信号的装置，方法和程序以及用于产生信号的方法
公开(公告)号：US08280075B2
公开(公告)日：2012-10-02
申请号：US12012534
申请日：2008-02-04
申请人： Kohei Asada , Tetsunori Itabashi , Kenji Nakano
发明人： Kohei Asada , Tetsunori Itabashi , Kenji Nakano
IPC分类号： H03G5/00
CPC分类号： H04S7/307 , H04S7/301 , H04S7/302
摘要： A signal processing apparatus includes a signal output unit for outputting a measurement signal, the measurement signal being produced by synthesizing a signal composed of a concatenation of 2d period signals with a sinusoidal signal, each period signal having a time-domain waveform period being 2n samples, the sinusoidal wave having a wave count within the concatenation period of 2d period signals being other than an integer multiple of 2d, and n and d being respectively natural numbers, and an analyzing unit for frequency analyzing a response signal obtained as a result of picking up the measurement signal output from the signal output unit.
摘要翻译：信号处理装置包括：信号输出单元，用于输出测量信号，所述测量信号是通过合成由2d周期信号组合的信号与正弦信号产生的，每个周期信号具有时域波形周期为2n个采样在2d周期信号的级联周期内具有除2d的整数倍之外的波数的正弦波，以及n和d分别是自然数，以及用于频率分析作为采样结果获得的响应信号的分析单元从信号输出单元输出的测量信号。

7. 发明申请

US20090245529A1 HEADPHONE DEVICE, SIGNAL PROCESSING DEVICE, AND SIGNAL PROCESSING METHOD 有权
标题翻译：耳机装置，信号处理装置和信号处理方法
公开(公告)号：US20090245529A1
公开(公告)日：2009-10-01
申请号：US12409830
申请日：2009-03-24
申请人： Kohei Asada , Tetsunori Itabashi , Noriyuki Ozawa
发明人： Kohei Asada , Tetsunori Itabashi , Noriyuki Ozawa
IPC分类号： G10K11/16
CPC分类号： G10K11/17833 , G10K11/17881 , G10K2210/108 , G10K2210/1081 , G10K2210/3039
摘要： A headphone device includes: a sound reproduction unit having a diaphragm which is configured to perform sound reproduction based on a sound signal; a sound pickup unit configured to perform a sound pickup operation; a filtering unit configured to apply filtering to a picked-up sound signal obtained by the sound pickup unit, to give a noise-cancelling signal characteristic; a combining unit configured to combine the picked-up sound signal that has undergone filtering, and a listening sound signal which is inputted separately, to generate a sound signal supplied to the sound reproduction unit; and an abnormality determination unit configured to determine occurrence or non-occurrence of an abnormal sound, on the basis of a result of level detection of a sound signal obtained within a sound signal processing system that includes the filtering unit and the combining unit and is formed between the sound pickup unit and the sound reproduction unit.
摘要翻译：耳机装置包括：具有隔膜的声音再现单元，被配置为基于声音信号执行声音再现; 声音拾取单元，被配置为执行声音拾取操作; 滤波单元，被配置为对由拾音单元获得的拾取声音信号应用滤波，以给出噪声消除信号特性; 组合单元，被配置为组合经过滤波的拾取声音信号和分别输入的收听声音信号，以产生提供给声音再现单元的声音信号; 以及异常判定单元，其基于在包括所述滤波单元和所述组合单元的声音信号处理系统内获得的声音信号的电平检测结果来确定异常声音的发生或不发生，并形成在声音拾取单元和声音再现单元之间。

8. 发明申请

US20080212791A1 SIGNAL PROCESSING APPARATUS AND SIGNAL PROCESSING METHOD 有权
标题翻译：信号处理装置和信号处理方法
公开(公告)号：US20080212791A1
公开(公告)日：2008-09-04
申请号：US12015824
申请日：2008-01-17
申请人： Kohei ASADA , Tetsunori Itabashi , Kazunobu Ohkuri
发明人： Kohei ASADA , Tetsunori Itabashi , Kazunobu Ohkuri
IPC分类号： H04B15/00
CPC分类号： G10L21/0208 , G10K11/178 , G10K2210/1081 , G10K2210/3051 , G10L19/0204 , H04R1/1083 , H04R3/04 , H04R5/033
摘要： Disclosed herein is a signal processing apparatus including: a first decimation processing section for generating, based on a digital signal in a first form, a digital signal in a second form; a second decimation processing section for generating, based on the digital signal in the second form, a digital signal in a third form; a first signal processing section for processing the digital signal in the third form; an interpolation processing section for converting a digital signal in the third form outputted from the first signal processing section into a digital signal in the second form; a second signal processing section for processing the digital signal in the second form outputted from the first decimation processing section; and a combining section for combining the digital signals in the second form outputted from the interpolation processing section and the second signal processing section.
摘要翻译：本文公开了一种信号处理装置，包括：第一抽取处理部分，用于基于第一形式的数字信号产生第二形式的数字信号; 第二抽取处理部分，用于基于第二形式的数字信号产生第三形式的数字信号; 用于处理第三形式的数字信号的第一信号处理部分; 内插处理部分，用于将从第一信号处理部分输出的第三形式的数字信号转换为第二形式的数字信号; 第二信号处理部分，用于处理从第一抽取处理部分输出的第二形式的数字信号; 以及组合部分，用于将从内插处理部分输出的第二形式的数字信号与第二信号处理部分组合。

9. 发明申请

US20060256970A1 Acoustic apparatus, time delay computation method, and recording medium 有权
标题翻译：声学装置，时间延迟计算方法和记录介质
公开(公告)号：US20060256970A1
公开(公告)日：2006-11-16
申请号：US11410881
申请日：2006-04-25
申请人： Kohei Asada , Tetsunori Itabashi
发明人： Kohei Asada , Tetsunori Itabashi
IPC分类号： H04R5/00
CPC分类号： H04S7/301
摘要： An acoustic apparatus includes a positive value conversion section configured to convert, into a positive value, a response signal obtained by collecting a test signal emitted from a speaker using a microphone; a detection section configured to detect a first transient response part that becomes a first mountain portion of the converted response signal; an estimation section configured to estimate a rise point of the converted response signal from at least N points that contain a peak position of the first transient response part or the vicinity thereof; and a computation section configured to compute a time delay of audio collected by the microphone based on the estimated rise point and on a timing at which the test signal is generated.
摘要翻译：声学装置包括：正值转换部分，被配置为将使用麦克风收集从扬声器发出的测试信号获得的响应信号转换成正值; 检测部，被配置为检测变换为响应信号的第一山部的第一瞬态响应部; 估计部分，被配置为从包含第一瞬态响应部分或其附近的峰值位置的至少N个点估计转换的响应信号的上升点; 以及计算部分，被配置为基于所估计的上升点和产生测试信号的定时来计算麦克风收集的音频的时间延迟。

10. 发明申请

US20050271223A1 Audio signal reproducing method and reproducing apparatus 审中-公开
标题翻译：音频信号再现方法和再现装置
公开(公告)号：US20050271223A1
公开(公告)日：2005-12-08
申请号：US10532546
申请日：2003-10-23
申请人： Tetsunori Itabashi , Kohei Asada
发明人： Tetsunori Itabashi , Kohei Asada
IPC分类号： H04R1/20 , H04R1/34 , H04R1/40 , H04R3/12 , H04S1/00 , H04S3/00 , H04S5/02 , H03G5/00
CPC分类号： H04R1/403 , H04R3/12 , H04R2203/12 , H04R2205/022 , H04R2430/25 , H04S3/00
摘要： A reproducing apparatus for an audio signal includes a number of digital filters, each supplied with an audio signal, and a speaker array in a configuration in which speakers are specially arranged. Outputs of the digital filters are delivered to the speakers. Predetermined delay times are respectively set at the digital filters, so that sound waves radiated from the speakers are reflected on wall surfaces, and then arrive at a sound field to form a place having sound pressure larger than that therearound within the sound field. Outputs of a second set of digital filters are delivered to the speakers. Predetermined delay times are respectively set at the second set of digital filters so as to suppress leakage sound which directly arrives at a place having large sound pressure from the speakers among sounds formed from outputs of the digital filters.
摘要翻译：用于音频信号的再现装置包括各自提供有音频信号的多个数字滤波器，以及扬声器被特别布置的配置中的扬声器阵列。数字滤波器的输出被传送到扬声器。在数字滤波器上分别设置预定的延迟时间，使得从扬声器辐射的声波反射在壁表面上，然后到达声场以形成声压大于声场内的声压的地方。第二组数字滤波器的输出被传送到扬声器。在第二组数字滤波器上分别设置预定的延迟时间，以便抑制从数字滤波器的输出形成的声音中直接到达来自扬声器的具有较大声压的位置的泄漏声音。

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