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SongTrellis |
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In Harmonic Interval Tunetext, each pitch of a note is encoded as a harmonic interval specification, which names the distance of a pitch from the root of it's accompanying chord.
Harmonic Interval Operators consist of the letter 'h' separated by a space from an interval name (Root,m2,M2,m3,M3,P4,aug4,P5,m6,M6,m7, or M7)
For example, 'h M3' means to build a note on the pitch that is a Major third interval above the root of the accompanying chord in the current octave range. The operator 'h m7' means to build a note on the pitch that is a minor 7th above the root of the accompanying chord in the current octave range.
Why use this format?
When you can identify the harmonic interval that a particular pitch creates with respect to it's harmonic accompaniment, you have specifically labelled the particular harmonic sensation that a note contributes to a musical composition.
When a musician analyzes a piece of music, identifying the harmonic interval that a particular note's pitch creates is a clerical task which can take many hours to perform for a sizable musical composition. Expressing a SongTrellis tunetext spec as a sequence of harmonic intervals, is an analysis that the SongTrellis server can perform in a fraction of a second.
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Last update: Monday, November 1, 2010 at 2:41 AM. |
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