Wah
This effect gives a wah-wah sound, by cyclically changing the tone.
Parameter  | Value  | Explanation  | 
|---|---|---|
PEAK  | 0–100  | Larger values narrow the frequency range at which the effect is applied.  | 
RATE  | 0–100 (when the SYNC parameter is OFF) 1.000–0.010 (bar; when the SYNC parameter is ON)  | Sets the cycle (period) of the effect.  | 
MANUAL  | 0–100  | Sets the frequency range in which the effect is applied.  | 
DEPTH  | 0–100  | Sets the depth of the effect.  | 
FLT TYPE  | Sets the filter type.  | |
LPF  | Applies the effect over a wide frequency range.  | |
BPF  | Applies the effect over a narrow frequency range.  | |
SYNC  | OFF, ON  | When this is ON, the effect sound synchronizes with the tempo.  |