Table 10.

Noise reduction algorithms and their parameters.

Algorithm	Parameters
Noisereduce	n_fft=1024,
	win_length=256,
	n_std_thresh_stationary=2,
	prop_decrease=0.75,
	freq_mask_smooth_hz=50,
	time_mask_smooth_ms=32
Spectral Subtraction	nfft=512,
	db_reduce=10,
	lookback=5,
	beta=20,
	alpha=3
Savitzky-Golay	window_length=5,
	polyorder=2
Subspace	frame_len=32,
	mu=10,
	lookback=10,
	skip=2,
	thresh=0.001
Iterative Wiener	frame_len=64,
	lpc_order=20,
	iterations=2,
	alpha=0.8,
	thresh=0.01
Wiener	window_size=5