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264 条记录 (耗时 0.014 秒)

    SAMPLING RATE CONVERSION DEVICE, AND SAMPLING RATE CONVERSION METHOD
    103.
    发明公开
    SAMPLING RATE CONVERSION DEVICE, AND SAMPLING RATE CONVERSION METHOD 审中-公开
    设备技术扫描速度和方法转换扫描速度的转换

    公开(公告)号：EP2530839A1

    公开(公告)日：2012-12-05

    申请号：EP11734716.1

    申请日：2011-01-20

    申请人： Mitsubishi Electric Corporation

    发明人： TOMITSUKA, Koji ,  SANO, Hiroyasu

    IPC分类号： H03H17/00 ,  H03H17/02

    CPC分类号： H03H17/0642 ,  H03H17/0227 ,  H03H17/0275 ,  H03H17/0294 ,  H03H2017/0222

    摘要： A sampling rate converting apparatus that performs sampling frequency conversion includes: a sampling-phase detecting unit (1) configured to calculate a sampling phase based on sampling timing after the sampling frequency conversion for each operation reference clock, based on a ratio of a frequency of an operation reference clock and a sampling frequency after the sampling frequency conversion; a sampling-clock detecting unit (2) configured to detect a sampling period based on the sampling phase; a poliphase filter (3) configured to apply filtering to an input signal and generate a signal after the sampling frequency conversion, based on the sampling period; and a filter-coefficient control unit (4) configured to set a filter coefficient in the poliphase filter (3), based on the sampling phase.

    摘要翻译： 采样速率变换装置确实进行采样频率转换，包括：采样相位检测单元（1）被配置为计算基于采样定时的采样频率转换为每个操作的基准时钟后一个取样相位，基于频率的比值 到操作的参考时钟和采样频率转换后的采样频率; 一个采样时钟检测单元（2）被配置为检测基于所述采样相位的采样周期; 更政治相过滤器（3）被配置为在输入信号应用滤波以并产生采样频率变换后的信号，基于所述采样周期; 并且被配置为滤波器系数控制单元（4）来设置在政治相过滤器（3）的滤波系数，基于所述采样相位。

    AUDIO SIGNAL OUTPUT DEVICE
    107.
    发明公开
    AUDIO SIGNAL OUTPUT DEVICE 有权
    AUDIOSIGNAL-AUSGABEEINRICHTUNG和Verfahren

    公开(公告)号：EP1772963A1

    公开(公告)日：2007-04-11

    申请号：EP05720524.7

    申请日：2005-03-10

    申请人： D&M Holdings, Inc.

    发明人： FUKUSHIMA, M. c/o D & M Holdings Inc. D & M Bldg

    IPC分类号： H03H17/00 ,  H03H17/02

    CPC分类号： H03H17/0621 ,  G10L21/038 ,  G11B20/10009 ,  G11B20/10527 ,  G11B2020/10546 ,  G11B2020/10564 ,  G11B2020/10583 ,  H03H17/028 ,  H03H17/0294 ,  H03M1/661

    摘要： The present invention relates to an audio signal output device for outputting based on a digital audio signal. A judging unit judges the frequency of reversals in polarity of the digital audio signal. A selecting unit switches an output of the audio signal output device between an output based on a first interpolated digital audio signal obtained by interpolating the digital audio signal by way of a first interpolation processing and another output based on a second interpolated digital audio signal obtained by interpolating the digital audio signal by way of a second interpolation processing in response to a judgment result made by the judging unit.

    摘要翻译： 本发明涉及一种用于基于数字音频信号输出的音频信号输出装置。 判断单元判断数字音频信号的极性反转频率。 选择单元基于通过第一内插处理对数字音频信号进行内插而获得的第一内插数字音频信号和基于由第二内插数字音频信号获得的第二内插数字音频信号而得到的另一输出，在音频信号输出装置的输出之间切换输出 响应于由判断单元作出的判断结果，通过第二内插处理内插数字音频信号。

    Linearity corrector using filter products
    108.
    发明公开
    Linearity corrector using filter products 有权
    线性校正器的滤波器乘积

    公开(公告)号：EP1655838A3

    公开(公告)日：2006-06-14

    申请号：EP05256742.7

    申请日：2005-10-31

    申请人： TEKTRONIX, INC.

    发明人： Slavin, Keith R.

    IPC分类号： H03H17/00

    CPC分类号： H03M1/0626 ,  H03M1/12

    摘要： A linearity corrector is provided that reduces distortion in a signal processing system, such as an ADC. The linearity corrector provides a first order signal path having distortion components connected to an adder, and a filter product circuit that is also connected to the adder. A method is provided for reducing distortion by calculating a filter product and adding the filter product to a first order signal having a relative delay such that the filter product reduces, or eliminates, the order of distortions corresponding to the order of the filter product.

    SAMPLING RATE CONVERSION DEVICE AND METHOD, AND AUDIO DEVICE
    110.
    发明公开
    SAMPLING RATE CONVERSION DEVICE AND METHOD, AND AUDIO DEVICE 审中-公开
    UMSETZUNGSEINRICHTUNG UND-EXFHRENFÜRABTASTRATEN UND AUDIO-EINRICHTUNG

    公开(公告)号：EP1622264A1

    公开(公告)日：2006-02-01

    申请号：EP05703752.5

    申请日：2005-01-18

    申请人： SONY CORPORATION

    发明人： MOGI, Yukihiko, c/o SONY CORPORATION ,  NISHIZAKI, Homare, c/o SONY CORPORATION

    IPC分类号： H03H17/00 ,  H03H17/06 ,  G10L13/00 ,  G10L19/00

    CPC分类号： H03H17/0294 ,  G10L19/02 ,  H03H17/0275 ,  H03H17/028 ,  H03H17/0642 ,  H03H17/0657 ,  H03H2017/0072

    摘要： A sampling rate converter able to obtain an amplitude characteristic that passes any frequency and able to achieve a high precision conversion without depending upon a cutoff frequency, having an up sampler 103 for inserting (U-1) zero points between signals and raising a sampling frequency Fsi U-fold, a convolution processing unit 104 including an FIR filter and interpolating a value by convolution with respect to output signals of the up sampler, and a linear interpolation block 105 for selecting two points of samples from the output signal of the convolution processing unit 104 having a sampling frequency UFsi and finding the value at a required position from the linear interpolation, wherein the FIR filter has an impulse response becoming a filter coefficient, having a transmission function H(z) associated with a transmission function Z(z) of a pre-filter, and having a filter coefficient set by performing weighted approximation with respect to a desired characteristic associated with the frequency response of the pre-filter.

    摘要翻译： 采样率转换器能够获得通过任何频率并能够实现高精度转换而不依赖于截止频率的振幅特性，具有用于在信号之间插入（U-1）零点并提高采样频率的上采样器103 Fsi U-fold，包括FIR滤波器并相对于上采样器的输出信号进行卷积内插的卷积处理单元104，以及用于从卷积处理的输出信号中选择两个采样点的线性插值块105 单元104具有采样频率UFsi，并且从线性内插中找出所需位置处的值，其中FIR滤波器具有成为具有与传输函数Z（z）相关联的传输函数H（z）的滤波器系数的脉冲响应， 的预滤波器，并且通过相对于相关联的wi的期望特性执行加权近似而具有滤波器系数集合 这是预滤波器的频率响应。