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公开(公告)号：EP2782361A4
公开(公告)日：2015-07-08
申请号：EP12843176
申请日：2012-10-25
发明人： YASUDA AKIRA , OKAMURA JUN-ICHI
CPC分类号： H03F3/2175 , G06F17/3074 , H03F2200/331 , H04H20/88 , H04R1/005 , H04R3/00 , H04R9/063 , H04R27/00 , H04R2209/026 , H04R2209/041 , H04R2460/03
摘要： Provided is a digital acoustic system comprising: a ”£ modulator that modulates a digital input signal and outputs a digital signal; a post-filter that is connected to the ”£ modulator and which performs mismatch shaping to convert the digital signal; a parallel-serial converter that converts the digital signal converted by the post-filter into a digital signal which is serially transmitted; a serial-parallel converter that restores the digital signal converted by the parallel-serial converter; and a drive circuit which receives the digital signal restored by the serial-parallel converter, and drives drive elements to convert the signal into an analog audio signal.
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公开(公告)号：EP2187657A1
公开(公告)日：2010-05-19
申请号：EP09766515.2
申请日：2009-05-29
发明人： OKAMURA, Jun-ichi , YASUDA, Akira
IPC分类号： H04R3/00 , G10K11/178 , H04R15/00 , H04R19/02
CPC分类号： H04R3/00 , H03F3/211 , H03F3/217 , H04R1/005 , H04R1/1008 , H04R3/12 , H04R15/00 , H04R27/00 , H04R2227/003 , H04R2499/13 , H04R2499/15
摘要： Proposed is a digital sound system most suitable for a digital speaker device for directly converting analog sound by a circuit using a ΔΣ modulator and a mismatch shaping filter circuit to output a plurality of digital signals and a plurality of speakers driven by the plurality of digital signals. Provided is a digital speaker driving device characterized in that the device is constituted of a ΔΣ modulator, a post filter, s driving circuits, and a power supply circuit for supplying power to the ΔΣ modulator, the post filter and the s driving elements and that the s driving circuits are adapted to s digital signal terminals.
摘要翻译： 提出了一种数字音响系统，最适合数字扬声器装置，用于使用“£调制器和不匹配整形滤波器电路直接转换模拟声音以输出多个数字信号和由多个数字信号驱动的多个扬声器 信号。 提供一种数字扬声器驱动装置，其特征在于，该装置由“£调制器，后置滤波器，s驱动电路”和用于向“£”调制器，后置滤波器和s驱动元件供电的电源电路 并且s个驱动电路适合于数字信号端子。
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公开(公告)号：EP2515555A1
公开(公告)日：2012-10-24
申请号：EP10788219.3
申请日：2010-11-02
发明人： YASUDA, Akira , OKAMURA, Jun-ichi
CPC分类号： H04R3/14 , G06F17/3074 , H04R3/12 , H04R2420/00 , H04R2420/03 , H04R2420/05 , H04R2430/01 , H04R2430/03 , H04R2499/13
摘要： An acoustic playback system including a digital filter; and a plurality of digital modulators each of which output a digital signal to one of a plurality of speakers configured with speakers driven by digital signals having different play back bandwidths; wherein the digital filter converts a digital audio signal which is input into a plurality of digital audio signals of a plurality of frequency bandwidths corresponding to play back bandwidths of the plurality of speakers, and outputs each of the digital audio signals of the plurality of frequency bandwidths to one of the plurality of digital modulators; each of the plurality of digital modulators outputs the modulated digital signal to the speaker of a play back bandwidth corresponding to a frequency bandwidth of the digital audio signal which is input by performing miss match shaping after noise shaping to a digital audio signal which is input; and each number of bits of a digital signal which is output by each of the digital modulators is different is provided.
摘要翻译： 包括数字滤波器的声学回放系统; 以及多个数字调制器，每个数字调制器将数字信号输出到配置有由具有不同播放带宽的数字信号驱动的扬声器的多个扬声器之一; 其中所述数字滤波器将输入的数字音频信号转换为与所述多个扬声器的播放带宽对应的多个频率带宽的多个数字音频信号，并输出所述多个频率带宽中的每个所述数字音频信号 涉及多个数字调制器之一; 多个数字调制器中的每一个数字调制器将经调制的数字信号输出到与通过在输入的数字音频信号之后执行未命中匹配整形而输入的数字音频信号的频率带宽相对应的播放带宽的扬声器; 并且提供由每个数字调制器输出的数字信号的每个位数不同。
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公开(公告)号：EP2391014A1
公开(公告)日：2011-11-30
申请号：EP10835733.6
申请日：2010-05-31
发明人： YASUDA Akira , OKAMURA Jun-ichi
CPC分类号： H03M1/066 , H03M1/74 , H03M3/502 , H04R3/00 , H04R2420/03
摘要： Provided is a selection device including an acquisition section for acquiring digital selection signals, and an output section for outputting selection signals to respective unit cells, each unit cell capable of being commanded to output the value zero. The selection device is characterized in that : each selection signal is for commanding the unit cell to output a value corresponding to that selection signal; the sum of the values to be output as commanded by the respective selection signals, which are output to the respective unit cells, is a value determined in association with the digital selection signal; and if the output corresponding to the digital selection signal is the value zero, then selection signals each commanding to output a non-zero value (N) are output to some of the unit cells.
摘要翻译： 提供了一种选择装置，其包括用于获取数字选择信号的获取部分和用于将选择信号输出到各个单位单元的输出部分，每个单位单元能够被命令输出值为零。 选择装置的特征在于：每个选择信号用于命令单位单元输出与该选择信号相对应的值; 输出到各个单位单元的由各个选择信号命令输出的值的和是与数字选择信号相关联地确定的值; 并且如果对应于数字选择信号的输出值为零，则每个命令输出非零值（N）的选择信号被输出到一些单位单元。
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公开(公告)号：EP2913931A4
公开(公告)日：2016-08-03
申请号：EP13848684
申请日：2013-10-25
发明人： YASUDA AKIRA , OKAMURA JUN-ICHI
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公开(公告)号：EP3035707A1
公开(公告)日：2016-06-22
申请号：EP16152775.9
申请日：2010-11-02
发明人： Yasuda, Akira , Okamura, Jun-ichi
CPC分类号： H04R3/14 , G06F17/3074 , H04R3/12 , H04R2420/00 , H04R2420/03 , H04R2420/05 , H04R2430/01 , H04R2430/03 , H04R2499/13
摘要： An acoustic playback system including a digital filter; and a plurality of digital modulators each of which output a digital signal to one of a plurality of speakers configured with speakers driven by digital signals having different play back bandwidths; wherein the digital filter converts a digital audio signal which is input into a plurality of digital audio signals of a plurality of frequency bandwidths corresponding to play back bandwidths of the plurality of speakers, and outputs each of the digital audio signals of the plurality of frequency bandwidths to one of the plurality of digital modulators; each of the plurality of digital modulators outputs the modulated digital signal to the speaker of a play back bandwidth corresponding to a frequency bandwidth of the digital audio signal which is input by performing miss match shaping after noise shaping to a digital audio signal which is input; and each number of bits of a digital signal which is output by each of the digital modulators is different is provided.
摘要翻译： 包括数字滤波器的声学回放系统; 以及多个数字调制器，每个数字调制器将数字信号输出到配置有由具有不同播放带宽的数字信号驱动的扬声器的多个扬声器之一; 其中所述数字滤波器将输入的数字音频信号转换为与所述多个扬声器的播放带宽对应的多个频率带宽的多个数字音频信号，并输出所述多个频率带宽中的每个所述数字音频信号 涉及多个数字调制器之一; 多个数字调制器中的每一个数字调制器将经调制的数字信号输出到与通过在输入的数字音频信号之后执行未命中匹配整形而输入的数字音频信号的频率带宽相对应的播放带宽的扬声器; 并且提供由每个数字调制器输出的数字信号的每个位数不同。
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公开(公告)号：EP2693626A4
公开(公告)日：2015-11-25
申请号：EP12765494
申请日：2012-03-23
发明人： YASUDA AKIRA , OKAMURA JUN-ICHI
CPC分类号： H02P6/005 , H02M7/53875 , H02P27/06
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公开(公告)号：EP2913931A1
公开(公告)日：2015-09-02
申请号：EP13848684.0
申请日：2013-10-25
发明人： YASUDA Akira , OKAMURA Jun-ichi
摘要： Provided is a data converter which is provided with a clock signal input part which inputs a clock signal, and an input part which inputs an input signal, a sampling part which, in response to the clock signal input to the clock signal input part, performs sampling of the input signal input to the input part, and a signal processing part which performs signal processing according to the sampling cycle and outputs an output signal, wherein when the cycle of the clock signal input to the clock signal input part becomes longer, the output signals output by the signal processing part are reduced.
摘要翻译： 提供一种数据转换器，其具有输入时钟信号的时钟信号输入部分和输入输入信号的输入部分;采样部分，其响应于输入到时钟信号输入部分的时钟信号执行 对输入到输入部分的输入信号进行采样;以及信号处理部分，其根据采样周期执行信号处理并输出输出信号，其中当输入到时钟信号输入部分的时钟信号的周期变长时， 由信号处理部分输出的输出信号被减少。
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公开(公告)号：EP2187657A4
公开(公告)日：2014-12-03
申请号：EP09766515
申请日：2009-05-29
发明人： OKAMURA JUN-ICHI , YASUDA AKIRA
IPC分类号： H04R3/00 , G10K11/178 , H04R15/00 , H04R19/02
CPC分类号： H04R3/00 , H03F3/211 , H03F3/217 , H04R1/005 , H04R1/1008 , H04R3/12 , H04R15/00 , H04R27/00 , H04R2227/003 , H04R2499/13 , H04R2499/15
摘要： Proposed is a digital sound system most suitable for a digital speaker device for directly converting analog sound by a circuit using a ”£ modulator and a mismatch shaping filter circuit to output a plurality of digital signals and a plurality of speakers driven by the plurality of digital signals. Provided is a digital speaker driving device characterized in that the device is constituted of a ”£ modulator, a post filter, s driving circuits, and a power supply circuit for supplying power to the ”£ modulator, the post filter and the s driving elements and that the s driving circuits are adapted to s digital signal terminals.
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公开(公告)号：EP3737117A1
公开(公告)日：2020-11-11
申请号：EP18898518.8
申请日：2018-01-04
IPC分类号： H04S1/00
摘要： A speaker driving device according to one embodiment includes: a first calculation unit for outputting a first calculation signal obtained from a first input signal based on response characteristics according to a first parameter, the first parameter defining an equivalent circuit of a first speaker unit; a first driving signal generation unit for generating a first driving signal based on a second driving signal and the first calculation signal, the first driving signal for driving a speaker unit; a third calculation unit for generating a third calculation signal from a second input signal based on response characteristics according to a third parameter, the third parameter defining an equivalent circuit of a third speaker unit; and a second driving signal generation unit for generating the second driving signal based on the first driving signal and the third calculation signal, the second driving signal for driving a speaker unit.
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