Design two-pole band-pass filter. Similar to SoX implementation.
functional_bandpass_biquad( waveform, sample_rate, central_freq, Q = 0.707, const_skirt_gain = FALSE )
(Tensor): audio waveform of dimension of
(int): sampling rate of the waveform, e.g. 44100 (Hz)
(float): central frequency (in Hz)
(float, optional): https://en.wikipedia.org/wiki/Q_factor (Default:
(bool, optional) : If
TRUE, uses a constant skirt gain (peak gain = Q).
FALSE, uses a constant 0dB peak gain. (Default:
Tensor: Waveform of dimension of