This gives the sound an undulating effect, based on the image of a coiled-up snake.
| Parameter | Value | Explanation |
|---|---|---|
| DEPTH | 0–100 | Adjusts how much the playback speed should be slowed down. |
| RATE | 0–100 (when the SYNC parameter is OFF) 1/128, 1/64, 1/32, 1/16, 1/8, 1/4, 1/2, 1/1, 2/1 (when the SYNC parameter is ON) | Sets the period at which the playback speed is lowered. |
| RESONANCE | 0–100 | Adjusts the filter’s resonance level. Increasing the value further emphasizes the effect, for a more unusual sound. |
| FLT MOD | 0–100 | Attenuates the high-frequency range according to the playback speed. |
| AMP MOD | 0–100 | Attenuates the volume according to the playback speed. |
| SYNC | OFF, ON | When this is ON, the effect sound synchronizes with the tempo. |