SAMPLING RATE CONVERSION DEVICE, AND SAMPLING RATE CONVERSION METHOD

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.