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Figure 19.1 Click on thumbnail for full size image. |
Figure 19.1 shows the Sequence box being selected and its properties being edited. The properies here are:
Start pitch. The relationship of pitch to frequency in the Kangas Sound Editor, when MIDI pitch numbers aren't being used, is log to base 2:
| Pitch | Frequency (Hz) |
|---|---|
| 1 | 1 |
| 2 | 2 |
| 3 | 4 |
| 4 | 8 |
| 5 | 16 |
| 6 | 32 |
| 7 | 64 |
| 8 | 128 |
| 9 | 256 |
| 10 | 512 |
| 11 | 1024 |
| 12 | 2048 |
| 13 | 4096 |
| 14 | 8192 |
| 15 | 16384 |
| 16 | 32768 |
The frequency range of human hearing is roughly from 20Hz to 20000Hz, or between 5 and 16 on this scale. Pitches at extremes of this range tend not to produce pleasant sounding results, but feel free to experiment.
Under this scale, a difference of 1 represents 1 octave.
Notice that in the "Start pitch" edit field, a new value of 7 (previous value was 8) has just been entered. The effect is to lower the entire Sequence by one octave.