Apply ISO 908 CD de-emphasis (shelving) IIR filter. Similar to SoX implementation.

functional_deemph_biquad(waveform, sample_rate)

Arguments

waveform

(Tensor): audio waveform of dimension of (..., time)

sample_rate

(int): sampling rate of the waveform, Allowed sample rate 44100 or 48000

Value

Tensor: Waveform of dimension of (..., time)