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 .
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The audio spectrum is the audible frequency range at which humans can hear and spans from 20 Hz to 20,000 Hz. The audio spectrum range spans from 20 Hz to 20,000 Hz and can be effectively broken down into seven different frequency bands , with each band having a different impact on the total sound.25 Nis 2020
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