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    • 4. 发明申请
    • SAMPLING RATE CONVERTING APPARATUS AND SAMPLING RATE CONVERTING METHOD
    • 采样速率转换装置和采样速率转换方法
    • US20120296608A1
    • 2012-11-22
    • US13574931
    • 2011-01-20
    • Koji TomitsukaHiroyasu Sano
    • Koji TomitsukaHiroyasu Sano
    • G06F15/00
    • H03H17/0642H03H17/0227H03H17/0275H03H17/0294H03H2017/0222
    • A sampling rate converting apparatus that performs sampling frequency conversion includes: a sampling-phase detecting unit 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 configured to detect a sampling period based on the sampling phase; a poliphase filter 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 configured to set a filter coefficient in the poliphase filter, based on the sampling phase.
    • 执行采样频率转换的采样率转换装置包括:采样相位检测单元,被配置为基于每个操作参考时钟的采样频率转换之后的采样定时,基于操作参考频率的比率来计算采样相位 时钟和采样频率后的采样频率转换; 采样时钟检测单元,被配置为基于所述采样相位来检测采样周期; 配置为对输入信号进行滤波并根据采样周期产生采样频率转换后的信号的脉冲相滤波器; 以及滤波器系数控制单元,被配置为基于所述采样相位来设置所述相位滤波器中的滤波器系数。