LowShelfFilter
Added in v0.21.0
A low shelf filter is a filter that either boosts (increases amplitude) or cuts
(decreases amplitude) frequencies below a certain center frequency. This transform
applies a low-shelf filter at a specific center frequency in hertz.
The gain at DC frequency is controlled by {min,max}_gain_db (note: can be positive or negative!).
Filter coefficients are taken from the W3 Audio EQ Cookbook
LowShelfFilter API
min_center_freq:float• unit: hertz- Default:
50.0. The minimum center frequency of the shelving filter max_center_freq:float• unit: hertz- Default:
4000.0. The maximum center frequency of the shelving filter min_gain_db:float• unit: Decibel- Default:
-18.0. The minimum gain at DC (0 Hz) max_gain_db:float• unit: Decibel- Default:
18.0. The maximum gain at DC (0 Hz) min_q:float• range: (0.0, 1.0]- Default:
0.1. The minimum quality factor Q. The higher the Q, the steeper the transition band will be. max_q:float• range: (0.0, 1.0]- Default:
0.999. The maximum quality factor Q. The higher the Q, the steeper the transition band will be. p:float• range: [0.0, 1.0]- Default:
0.5. The probability of applying this transform.