Effect 4xy
From Famitracker Wiki
4xy is the vibrato effect. It can be used on any channel except DPCM. x sets the speed of the vibrato, with larger value meaning faster vibrato. 0 (40y) disables the vibrato. y = depth, larger value means deeper vibrato.
- Note: 2A03 has a bug that resets the duty phase when switching between certain frequencies. This can be heard as a pop and might be noticable when using vibrato or pitch slides across those frequencies.
Vibrato Depth
Note: Depth is in frequency register.
| Effect | Depth |
|---|---|
| 4x0 | 1 |
| 4x1 | 1 |
| 4x2 | 2 |
| 4x3 | 3 |
| 4x4 | 4 |
| 4x5 | 7 |
| 4x6 | 8 |
| 4x7 | F |
| 4x8 | 10 |
| 4x9 | 1F |
| 4xA | 20 |
| 4xB | 3F |
| 4xC | 40 |
| 4xD | 7F |
| 4xE | 80 |
| 4xF | FF |
| Effect | Depth |
|---|---|
| 4x0 | 1 |
| 4x1 | 3 |
| 4x2 | 5 |
| 4x3 | 7 |
| 4x4 | 9 |
| 4x5 | D |
| 4x6 | 13 |
| 4x7 | 17 |
| 4x8 | 1B |
| 4x9 | 21 |
| 4xA | 2B |
| 4xB | 3B |
| 4xC | 57 |
| 4xD | 7F |
| 4xE | BF |
| 4xF | FF |
Example
C-4 00 F --- --- -- - --- --- -- - 462 --- -- - --- --- -- - --- --- -- - 400
C-4 is note, 00 is instrument number, F is volume. Vibrato starts from line with 4xx effect and will continue until 400.
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