Text File | 1998-10-23 | 926 b | 19 lines | [TEXT/ScoM]
fold-tonality max-note max-octave tonality-list
This function reduces the range of the tonality so that notes that go higher than the max-note and max-octave are octave-transposed to keep below that limit.
Examine the following chord progression in the visualizer. Notice how the chord progression goes higher and higher.
(symbols-to-tonality
symbols '(a b c d e f g h)
transpose '((0 2 4))
mapping (activate-tonality (messiaen6 c 5)))
Here is the same chord progression limited to a 5. The progression keeps in a uniform range and will sound much better. Note that the notes which exceed the limit and are transposed down still stay in the same position in the tonality list. To sort the tonality into lower..higher order use sort-tonality.
