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公开(公告)号：US20080285406A1
公开(公告)日：2008-11-20
申请号：US12116880
申请日：2008-05-07
IPC分类号： G11B20/10
CPC分类号： G11B20/10027 , G11B20/10055 , G11B20/10194 , G11B20/10203
摘要： Provided is an optical disc apparatus which reproduces with use of a PRML method an optical disc having data recorded in a plurality of code lengths, the optical disc apparatus including: an AD conversion unit adapted to convert a reproduction signal of the optical disc into a multi-value digital signal; a waveform equalization unit adapted to perform waveform equalization on the multi-value digital signal on the basis of a predetermined partial response to generate an equalized reproduction signal; a decoding unit adapted to generate decoded data corresponding to data recorded on the optical disc from the equalized reproduction signal; and a crest value extraction unit adapted to extract a crest value for each of the code lengths on the basis of the decoded data and a type of the predetermined partial response.
摘要翻译： 提供一种光盘装置，其使用PRML方法再现具有以多个码长度记录的数据的光盘，该光盘装置包括：AD转换单元，其适于将光盘的再现信号转换为多个 值数字信号; 波形均衡单元，其适于基于预定的部分响应对多值数字信号执行波形均衡以产生均衡的再现信号; 解码单元，适于从所述均衡的再现信号中生成与记录在所述光盘上的数据相对应的解码数据; 以及波峰值提取单元，其适于基于解码数据和预定部分响应的类型来提取每个码长的波峰值。
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2.发明申请APPARATUS FOR REPRODUCING DATA ON RECORDING MEDIUM AND METHOD FOR REPRODUCING DATA ON THE MEDIUM 审中-公开用于在记录介质上再现数据的装置和用于在介质上再现数据的方法公开(公告)号：US20080019249A1
公开(公告)日：2008-01-24
申请号：US11771906
申请日：2007-06-29
申请人： Yukiyasu Tatsuzawa , Hideyuki Yamakawa , Koichi Otake , Norikatsu Chiba , Yasuhiro Kanishima , Toshifumi Yamamoto , Toshihiko Kaneshige
发明人： Yukiyasu Tatsuzawa , Hideyuki Yamakawa , Koichi Otake , Norikatsu Chiba , Yasuhiro Kanishima , Toshifumi Yamamoto , Toshihiko Kaneshige
IPC分类号： G11B5/09
CPC分类号： G11B20/10009 , G11B20/10046 , G11B20/10055 , G11B20/10212 , G11B20/10296
摘要： An apparatus for reproducing digital data recorded on a recording medium by a Partial Response Maximum Likelihood method, the digital data being recorded in a code pattern in which the same code continuously appears at least two times, includes an analog-to-digital converting unit that samples an analog reproduction signal recorded on the recording medium and converts the sampled analog reproduction signal into a digital signal; a sampling rate switching unit that adaptively switches the sampling rate in the analog-to-digital converting unit from a higher rate to a lower rate; and a data demodulating unit that reproduces and demodulates the digital signal subjected to the analog-to-digital conversion in the analog-to-digital converting unit by the Partial Response Maximum Likelihood method in accordance with the switching between the higher rate and the lower rate.
摘要翻译： 一种用于通过部分响应最大似然方法再现记录在记录介质上的数字数据的装置，所述数字数据以相同代码连续出现至少两次的代码模式被记录，包括模数转换单元，模数转换单元 采样记录在记录介质上的模拟再现信号，并将采样的模拟再现信号转换为数字信号; 采样率切换单元，其自适应地将模数转换单元中的采样率从较高速率切换到较低速率; 以及数据解调单元，其通过部分响应最大似然方法根据较高速率和较低速率之间的切换再现和解调在模数转换单元中经受模数转换的数字信号 。
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公开(公告)号：US20120158809A1
公开(公告)日：2012-06-21
申请号：US13178184
申请日：2011-07-07
IPC分类号： G06F17/10
CPC分类号： H04R3/04 , H04R29/001
摘要： According to one embodiment, a compensation filtering device includes an impulse response calculator, a coefficient calculator, and an adder. The impulse response calculator calculates an impulse response of a reproduction system comprising a sound field. The coefficient calculator calculates a compensation coefficient to compensate for a tap coefficient such that a direct current gain of an extracted finite impulse response (FIR) filter with a predetermine number of taps extracted from an FIR filter having reverse characteristics of the impulse response takes a predetermined value. The tap coefficient indicates a weight of each of the taps. The adder adds the compensation coefficient to the tap coefficient of each of the taps of the extracted FIR filter to generate a compensation filter to compensate for acoustic characteristics of the reproduction system.
摘要翻译： 根据一个实施例，补偿滤波装置包括脉冲响应计算器，系数计算器和加法器。 脉冲响应计算器计算包括声场的再现系统的脉冲响应。 系数计算器计算补偿系数以补偿抽头系数，使得从具有脉冲响应的反向特性的FIR滤波器提取的具有预定数量的抽头的提取的有限脉冲响应（FIR）滤波器的直流增益采用预定的 值。 抽头系数表示每个抽头的重量。 加法器将补偿系数与提取的FIR滤波器的每个抽头的抽头系数相加，以产生补偿滤波器，以补偿再现系统的声学特性。
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公开(公告)号：US08050421B2
公开(公告)日：2011-11-01
申请号：US12775973
申请日：2010-05-07
IPC分类号： H04B15/00
CPC分类号： H04R1/1083 , H04R1/1075 , H04R3/04
摘要： According to one embodiment, an acoustic correction apparatus includes: a signal obtaining module configured to obtain an acoustic signal from a target space including an object and an external space; a signal output module configured to output to the target space a measurement signal; a coefficient identifying module configured to identify, on the basis of a response acoustic signal, a correction coefficient of a correction filter that reduces a resonance frequency component of a resonance in the object; a filtering module configured to use the correction filter, and filter the signal provided to the object; a noise cancelling module configured to remove, on the basis of the acoustic signal, a noise component comprised in the acoustic signal from the filtered signal; and an output module configured to output the acoustic signal, from which the noise component is removed by the noise cancelling module, to the object.
摘要翻译： 根据一个实施例，声学校正装置包括：信号获取模块，被配置为从包括对象和外部空间的目标空间获得声信号; 信号输出模块，被配置为向所述目标空间输出测量信号; 系数识别模块，被配置为基于响应声学信号识别减少所述对象中的共振的共振频率分量的校正滤波器的校正系数; 被配置为使用所述校正滤波器并对提供给所述对象的信号进行滤波的滤波模块; 噪声消除模块，被配置为基于所述声学信号从所述滤波信号中去除包括在所述声学信号中的噪声分量; 以及输出模块，被配置为将噪声分量被噪声消除模块从其去除的声信号输出到对象。
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公开(公告)号：US07957549B2
公开(公告)日：2011-06-07
申请号：US12634424
申请日：2009-12-09
申请人： Norikatsu Chiba , Toshifumi Yamamoto , Takashi Fukuda , Yasuhiro Kanishima , Shigeyasu Iwata , Kazuyuki Saito , Yutaka Oki
发明人： Norikatsu Chiba , Toshifumi Yamamoto , Takashi Fukuda , Yasuhiro Kanishima , Shigeyasu Iwata , Kazuyuki Saito , Yutaka Oki
CPC分类号： H04R1/1041 , H03F2200/03 , H04R1/1016 , H04R5/027 , H04R5/033
摘要： According to one embodiment, an acoustic apparatus comprises an electro-acoustic transducer with a first function of converting an electric signal to an acoustic signal and a second function of converting an acoustic signal to an electric signal, the electro-acoustic transducer configured to convert a measuring electric signal to a measuring acoustic signal using the first function, and to convert an acoustic response signal responding to the measuring acoustic signal from an object to an electric response signal using the second function, a switch configured to switch the first function to the second function, or vice versa, and a switch controller configured to control a function switching of the switch in accordance with a sound source signal.
摘要翻译： 根据一个实施例，声学设备包括具有将电信号转换为声信号的第一功能的电声换能器和将声信号转换为电信号的第二功能，所述电声换能器被配置为将 使用第一功能将电信号测量到测量声信号，并且使用第二功能将响应于来自对象的测量声信号的声响应信号转换为电响应信号;开关，被配置为将第一功能切换到第二功能 功能，反之亦然;以及开关控制器，被配置为根据声源信号控制开关的功能切换。
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公开(公告)号：US08577051B2
公开(公告)日：2013-11-05
申请号：US13093601
申请日：2011-04-25
CPC分类号： H04R3/04
摘要： According to one embodiment, a sound signal compensation apparatus includes an input module, a compensation module, and an output module. The input module receives identification information identifying a first frequency with regard to a resonance of an ear closed by an earphone or headphone. The compensation module performs first compensation emphasizing a second frequency on a sound signal, the second frequency being determined based on the identification information or the first frequency. The output module outputs the compensated sound signal. The compensation module is configured to perform the first compensation emphasizing the second frequency, at which emphasis is greater than or equal to 2 dB and less than or equal to 12 dB.
摘要翻译： 根据一个实施例，声音信号补偿装置包括输入模块，补偿模块和输出模块。 输入模块接收关于由耳机或耳机关闭的耳朵的共振识别第一频率的识别信息。 补偿模块执行强调声音信号的第二频率的第一补偿，第二频率是基于识别信息或第一频率确定的。 输出模块输出补偿后的声音信号。 补偿模块被配置为执行强调第二频率的第一补偿，其中强调大于或等于2dB且小于或等于12dB。
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公开(公告)号：US20110158427A1
公开(公告)日：2011-06-30
申请号：US12963475
申请日：2010-12-08
申请人： Norikatsu Chiba , Kimio Miseki , Yasuhiro Kanishima , Kazuyuki Saito , Toshifumi Yamamoto , Takashi Fukuda
发明人： Norikatsu Chiba , Kimio Miseki , Yasuhiro Kanishima , Kazuyuki Saito , Toshifumi Yamamoto , Takashi Fukuda
IPC分类号： H04B15/00
CPC分类号： H04R3/04
摘要： An audio signal compensation device includes: a signal processor configured to perform filtering on an input audio signal; a filter coefficients storage module configured to store a plurality of filter coefficients; a user interface configured to provide options for a determination of filter coefficients to a user and to obtain a selection result from the user; and a filter coefficients determining module configured to determine a set of filter coefficients among the plurality of filter coefficients based on the selection result. The options for the determination of filter coefficients are produced by selecting a first filter coefficient and a second filter coefficient from the plurality of filter coefficients, the first filter coefficient corresponding to a first characteristic quantity of external auditory canal characteristics, the second filter coefficient corresponding to a second characteristic quantity of the external auditory canal characteristics which is predicted based on the first characteristic quantity.
摘要翻译： 音频信号补偿装置包括：信号处理器，被配置为对输入音频信号执行滤波; 滤波器系数存储模块，被配置为存储多个滤波器系数; 用户界面，被配置为提供用于确定用户的滤波器系数的选项并从用户获得选择结果; 以及滤波器系数确定模块，被配置为基于所述选择结果确定所述多个滤波器系数中的一组滤波器系数。 用于确定滤波器系数的选项通过从多个滤波器系数中选择第一滤波器系数和第二滤波器系数来产生，第一滤波系数对应于外耳道特征的第一特征量，第二滤波系数对应于 基于第一特征量预测的外耳道特征的第二特征量。
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公开(公告)号：US20100166218A1
公开(公告)日：2010-07-01
申请号：US12543265
申请日：2009-08-18
申请人： Kazuyuki Saito , Toshifumi Yamamoto , Norikatsu Chiba , Shigeyasu Iwata , Yasuhiro Kanishima , Takashi Fukuda , Yutaka Oki
发明人： Kazuyuki Saito , Toshifumi Yamamoto , Norikatsu Chiba , Shigeyasu Iwata , Yasuhiro Kanishima , Takashi Fukuda , Yutaka Oki
IPC分类号： H03G5/00
CPC分类号： H03G3/3094 , H03G5/165
摘要： According to one embodiment, a sound processor includes a creating module, a filter, and a combining module. The creating module creates a plurality of first acoustic models based on a frequency characteristic that represents an acoustic property of an object to be measured. The first acoustic models are modeled with respect to resonance properties that vary depending on frequency bands. The filter extracts frequency components in the frequency bands from the respective first acoustic models. The combining module combines the frequency components extracted from the first acoustic models to create a second acoustic model.
摘要翻译： 根据一个实施例，声音处理器包括创建模块，滤波器和组合模块。 创建模块基于表示待测对象的声学属性的频率特性来创建多个第一声学模型。 关于根据频带变化的谐振特性来建模第一声学模型。 滤波器从相应的第一声学模型中提取频带中的频率分量。 组合模块组合从第一声学模型提取的频率分量以产生第二声学模型。
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公开(公告)号：US20120134502A1
公开(公告)日：2012-05-31
申请号：US13172654
申请日：2011-06-29
IPC分类号： H04R29/00
CPC分类号： H04R29/001 , H04R3/04
摘要： According to one embodiment, audio correction apparatus connected to audio player, includes output module configured to output audio signal as sound, and filter configured to correct the audio signal based on tap coefficient is provided. The apparatus includes, audio measurement module configured to pick up plurality of recording signals obtained by recording sound output from output module at detection points located at different points, audio analyzer configured to calculate plurality of frequency responses based on plurality of recording signals obtained by audio measurement module, and audio correction module configured to calculate maximum amplitude response by specifying maximum amplitude for each of frequencies, to calculate average group delay property for each of frequencies, to calculate tap coefficient based on maximum amplitude and average group delay property, and to output tap coefficient to filter of audio player.
摘要翻译： 根据一个实施例，连接到音频播放器的音频校正装置包括被配置为输出音频信号作为声音的输出模块，并且提供了基于抽头系数校正音频信号的滤波器。 该装置包括：音频测量模块，被配置为拾取通过在位于不同点的检测点处记录从输出模块输出的声音获得的多个记录信号，音频分析器被配置为基于通过音频测量获得的多个记录信号来计算多个频率响应 模块和音频校正模块，被配置为通过为每个频率指定最大幅度来计算最大振幅响应，以计算每个频率的平均组延迟特性，以基于最大振幅和平均组延迟特性计算抽头系数，并输出抽头 系数过滤音频播放器。
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公开(公告)号：US20110170700A1
公开(公告)日：2011-07-14
申请号：US12888321
申请日：2010-09-22
IPC分类号： G10K11/16
CPC分类号： H04R3/04
摘要： According to one embodiment, an acoustic signal compensator includes an acoustic signal receiving module, a compensator, and an output module. The acoustic signal receiving module receives an acoustic signal. The compensator performs compensation on the acoustic signal, as compensation of acoustic characteristics of an ear including an ear canal having a first-order resonance characteristic and a second-order resonance characteristic, to suppress a first-order frequency of ear resonance and a second-order frequency lower than double of the first-order frequency. The output module outputs the acoustic signal compensated by the compensator.
摘要翻译： 根据一个实施例，声信号补偿器包括声信号接收模块，补偿器和输出模块。 声信号接收模块接收声信号。 补偿器对声信号执行补偿，作为包括具有一阶谐振特性和二次谐振特性的耳道的耳朵的声学特性的补偿，以抑制耳谐振的一阶频率， 订单频率低于一阶频率的两倍。 输出模块输出由补偿器补偿的声信号。
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