torchaudio.functional.deemph_biquad

torchaudio.functional.deemph_biquad(waveform: Tensor, sample_rate: int) → Tensor

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

Parameters:

• waveform (Tensor) – audio waveform of dimension of (…, time)

• sample_rate (int) – sampling rate of the waveform, Allowed sample rate 44100 or 48000

Returns:

Waveform of dimension of (…, time)

Return type:

Tensor

Reference:

• http://sox.sourceforge.net/sox.html

• https://www.w3.org/2011/audio/audio-eq-cookbook.html#APF