Generate a fractional delay FIR coefficients.

The resulting stream can be used with afir filter for filtering the audio signal.

The filter accepts the following options:

delay, d

Set the fractional delay. Default is 0.

sample_rate, r

Set the sample rate, default is 44100.

nb_samples, n

Set the number of samples per each frame. Default is 1024.

taps, t

Set the number of filter coefficents in output audio stream. Default value is 0.

channel_layout, c

Specifies the channel layout, and can be a string representing a channel layout. The default value of channel_layout is "stereo".