Class reference
AudioEffectDistortion
Inherits AudioEffect
Adds a distortion audio effect to an Audio bus. Modifies the sound to make it distorted.
Description
Different types are available: clip, tan, lo-fi (bit crushing), overdrive, or waveshape. By distorting the waveform the frequency content changes, which will often make the sound "crunchy" or "abrasive". For games, it can simulate sound coming from some saturated device or speaker very efficiently.
Properties
float drive = 0.0
Distortion power. Value can range from 0 to 1.
float keep_hf_hz = 16000.0
High-pass filter, in Hz. Frequencies higher than this value will not be affected by the distortion. Value can range from 1 to 20000.
int mode = 0
Distortion type.
float post_gain = 0.0
Increases or decreases the volume after the effect, in decibels. Value can range from -80 to 24.
float pre_gain = 0.0
Increases or decreases the volume before the effect, in decibels. Value can range from -60 to 60.
Constants
MODE_CLIP = 0
Digital distortion effect which cuts off peaks at the top and bottom of the waveform.
MODE_ATAN = 1
MODE_LOFI = 2
Low-resolution digital distortion effect (bit depth reduction). You can use it to emulate the sound of early digital audio devices.
MODE_OVERDRIVE = 3
Emulates the warm distortion produced by a field effect transistor, which is commonly used in solid-state musical instrument amplifiers. The drive property has no effect in this mode.
MODE_WAVESHAPE = 4
Waveshaper distortions are used mainly by electronic musicians to achieve an extra-abrasive sound.