Time Stretch

Stretch stft in time without modifying pitch for a given rate.

transform_time_stretch(hop_length = NULL, n_freq = 201, fixed_rate = NULL)

Arguments

hop_length

(int or NULL, optional): Length of hop between STFT windows. (Default: win_length // 2)

n_freq

(int, optional): number of filter banks from stft. (Default: 201)

fixed_rate

(float or NULL, optional): rate to speed up or slow down by. If NULL is provided, rate must be passed to the forward method. (Default: NULL)

Value

Tensor: Stretched complex spectrogram of dimension (..., freq, ceil(time/rate), complex=2).

Details

forward param: complex_specgrams (Tensor): complex spectrogram (..., freq, time, complex=2).

overriding_rate (float or NULL, optional): speed up to apply to this batch. If no rate is passed, use self$fixed_rate. (Default: NULL)