Table 9.

Parameters for noise reduction.

Parameter	Description
n_fft	Length of the windowed signal after padding with zeros, by default 1024.
win_length	Each frame of audio is windowed by “window“ of length “win_length“ and then padded with zeros to match “n_fft“, by default None.
hop_length	Number of audio samples between adjacent STFT columns, by default None.
n_std_thresh	Number of standard deviations above mean to place the threshold between signal and noise, by default 1.5.
noise_window_size_nonstationary_ms	The window size (in milliseconds) to compute the noise floor over in the non-stationary algorithm, by default 1.
freq_mask_smooth_hz	The frequency range to smooth the mask over in Hz, by default 500.
time_mask_smooth_ms	The time range to smooth the mask over in milliseconds, by default 50.
prop_decrease	The proportion to reduce the noise by (1.0 = 100%), by default 1.0.