Unified · Split
| @@ -242,6 +242,11 @@ Playback Control · 241 unmodified lines | ||
| 242 | 242 | affect playback speed. Playing with an altered pitch automatically inserts |
| 243 | 243 | the ``scaletempo2`` audio filter. |
| 244 | 244 | |
| 245 | + Since pitch change is achieved by combining pitch-preserving speed change and | |
| 246 | + resampling, the range of pitch change is effectively limited by the | |
| 247 | + ``min-speed`` and ``max-speed`` parameters of ``scaletempo2``: for example, | |
| 248 | + a ``min-speed`` of 0.25 limits the highest pitch factor to 4 (1/0.25). | |
| 249 | + | |
| 245 | 250 | In a standard 12-tone scale system, octaves are separated by a factor of 2 |
| 246 | 251 | whereas semitones are represented by a factor of 2^(1/12). This means |
| 247 | 252 | pitches can easily be shifted up or down with a simple multiplier. |