GLOSSARY

term explanation
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Autoharp A popular form of chorded zither, invented in the 19th Century. Autoharp® was a registered copyright of by Oscar Schmidt
PolyHarp A Polyphonic, microtonal-friendly chorded virtual instrument.
Base Key A frequency that all the chords are relative to.
Just A system of intonation where all the intervals can be expressed as integral ratios.
EDO Equal Divisions of an Octave. Modern Western music is mostly written in 12 EDO, also known as 12 tone equal Temperament (12 TET).
EDI Equal Divisions of another Interval. PolyHarp lets you divide any interval into equal parts, e.g. 1:4@5/4 is the first degree of a 5/4 (perfect third) divided into 4 equal parts.
TET Tone Equal Temperament. The overwhelming number of Western music uses 12 TET, also known as 12 EDO (equal divisions of an octave)
Interval A difference in pitch between two frequencies.
Interval Spec A coded name for an interval, like "V" or "3/2" or "7:19".
On String A virtual string that is positioned where the On String Interval places it, but with the tuning of the string's interval.
Chord Bar A Chord Type that is transposed by an interval related to the Base Key. If the Base Key is C, a V7 chord would resolve to be a G7.
Chord Bars A set of Chords.
Chord Button A button that represents a Chord Bar.
Chord Type A set of intervals. For example, a Major (M) chord would be based on the intervals I, III, V.
Lock Bar A bar which stays down until you touch it again.
PolyHarp patch A configuration of PolyHarp: ChordBars, chords, colors, and layout
Course Several "strings" behaving as (nearly) the same pitch.
String Area A rectangle or other quadrilateral with virtual strings to strum.