Low-quality digital sampling
Headroom | Peak clipping threshold |
Quant | Bit depth (typically 8 or below for "telephone" quality) |
Rate | Sample Rate (turn control to left or right for different sound characters) |
Post Filter | Low-pass filter to muffle the distortion produced by the previous two controls |
Non-Linearity | Additional harmonic distortion "thickening" (turn control to left or right for different sound characters) |
Output | Level trim |