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1. 发明申请

US20120106763A1 AUDIO SIGNAL PROCESSING DEVICE, AUDIO SIGNAL PROCESSING METHOD, AND PROGRAM 有权
标题翻译：音频信号处理设备，音频信号处理方法和程序
公开(公告)号：US20120106763A1
公开(公告)日：2012-05-03
申请号：US13278644
申请日：2011-10-21
申请人： Koyuru OKIMOTO , Yuji Yamada
发明人： Koyuru OKIMOTO , Yuji Yamada
IPC分类号： H04R1/02
CPC分类号： H04S7/301 , H04R2499/13 , H04R2499/15 , H04S7/302 , H04S7/305
摘要： An audio signal processing device includes two audio signal processing units that serially perform a processing with respect to an input audio signal, and obtain an output audio signal for driving a speaker. One audio signal processing unit of the two audio signal processing units performs, with respect to the input audio signal, a correction process through a filter that realizes a reverse characteristic of an impulse response measured at a first measurement position that is a front position of the speaker. The other audio signal processing unit performs, with respect to the input audio signal, a correction process through a filter that realizes a reverse characteristic of an impulse response measured at a second measurement position different from the first measurement position that is a front position of the speaker.
摘要翻译：音频信号处理装置包括对输入音频信号进行串行处理的两个音频信号处理单元，并获得用于驱动扬声器的输出音频信号。两个音频信号处理单元的一个音频信号处理单元相对于输入音频信号执行通过滤波器的校正处理，该滤波器实现在作为第一测量位置的第一测量位置处测量的脉冲响应的反向特性扬声器。另一个音频信号处理单元相对于输入音频信号执行通过滤波器的校正处理，该滤波器实现在与作为第一测量位置的第一测量位置不同的第二测量位置处测量的脉冲响应的反向特性扬声器。

2. 发明申请

US20110301731A1 AUDIO SIGNAL PROCESSING APPARATUS AND AUDIO SIGNAL PROCESSING METHOD 有权
标题翻译：音频信号处理设备和音频信号处理方法
公开(公告)号：US20110301731A1
公开(公告)日：2011-12-08
申请号：US13109166
申请日：2011-05-17
申请人： Koyuru OKIMOTO , Yuji Yamada
发明人： Koyuru OKIMOTO , Yuji Yamada
IPC分类号： G06F17/00
CPC分类号： H04R3/00 , H04R3/04 , H04R5/04 , H04S7/305
摘要： An audio signal processing apparatus includes a signal processing unit, an output unit, a retention unit, and a coefficient setting unit. The signal processing unit is configured to perform signal processing on an audio signal by a digital filter. The output unit is configured to be connected to an external speaker and output the audio signal to the speaker. The retention unit is configured to retain a plurality of filter coefficients that are impulse responses having reverse characteristics of a plurality of speakers having different speaker characteristics. The coefficient setting unit is configured to select one of the filter coefficients that corresponds to the speaker connected to the output unit from the retention unit and set the filter coefficient in the digital filter.
摘要翻译：音频信号处理装置包括信号处理单元，输出单元，保持单元和系数设定单元。信号处理单元被配置为通过数字滤波器对音频信号执行信号处理。输出单元被配置为连接到外部扬声器并将音频信号输出到扬声器。保持单元被配置为保持作为具有不同扬声器特性的多个扬声器的具有反向特性的脉冲响应的多个滤波器系数。系数设定单元被配置为从保持单元中选择与连接到输出单元的扬声器对应的滤波器系数中的一个，并将滤波器系数设置在数字滤波器中。

3. 发明申请

US20130089209A1 AUDIO-SIGNAL PROCESSING DEVICE, AUDIO-SIGNAL PROCESSING METHOD, PROGRAM, AND RECORDING MEDIUM 有权
标题翻译：音频信号处理设备，音频信号处理方法，程序和记录介质
公开(公告)号：US20130089209A1
公开(公告)日：2013-04-11
申请号：US13591814
申请日：2012-08-22
申请人： Koyuru OKIMOTO , Yuuji Yamada , Juri Sakai
发明人： Koyuru OKIMOTO , Yuuji Yamada , Juri Sakai
IPC分类号： H04R5/00
CPC分类号： G10L19/008 , H04S3/004 , H04S3/008 , H04S2400/01 , H04S2400/03
摘要： An audio-signal processing device includes a decoding unit that decodes a compressed audio stream to obtain audio signals for a predetermined number of channels; a signal processing unit that generates 2-channel audio signals including left-channel audio signals and right-channel audio signals, on the basis of the predetermined-number-of-channels audio signals; and a coefficient setting unit that sets filter coefficients corresponding to the impulse responses for the digital filters, on the basis of format information of the compressed audio stream. The signal processing unit uses digital filters to convolve impulse responses for paths from sound-source positions of the channels to the left and right ears of a listener with the corresponding predetermined-number-of-channels audio signals and adds corresponding results of the convolutions for the channels to generate the left-channel audio signals and the right-channel audio signals.
摘要翻译：音频信号处理装置包括解码单元，其对压缩音频流进行解码以获得用于预定数量信道的音频信号; 信号处理单元，其基于预定数量的声道音频信号生成包括左声道音频信号和右声道音频信号的2声道音频信号; 以及系数设置单元，其基于压缩音频流的格式信息来设置与数字滤波器的脉冲响应相对应的滤波器系数。信号处理单元使用数字滤波器来对来自声道的声源位置的路径的脉冲响应与相应的预定数量的声道音频信号进行收敛，并将相应的卷积结果添加到收听者的左耳和右耳中产生左声道音频信号和右声道音频信号的通道。

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