Since the audible sound frequency ranges from 20Hz to 20kHz , a typical sampling rate for ADC is 48kHz or 44.1kHz, and the filter’s cut-off frequency is usually set about 20kHz .
Since the audible sound frequency ranges from 20Hz to 20kHz , a typical sampling rate for ADC is 48kHz or 44.1kHz, and the filter’s cut-off frequency is usually set about 20kHz .