inserts noise the audio file.
dbNoiseLevel
An amplitude of noise in db, from -92 db to 0.
NoiseType
The noise type. 1- white noise, 2 - Gaussian noise.
-Left-click-and-drag on the select a portion of the audio
-Click Effects menu and select Noise
Tip: If a part of a file is selected then the signal is inserted instead the selected part, otherwise it is inserted to the current cursor position.