Delta-rational chord: Difference between revisions

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In an '''isodifferential chord''' (known variously by '''linear chord''', '''equal-hertz chord''', '''equal-beating chord''', and '''proportional-beating chord'''), the frequencies of the pitches are in an arithmetic sequence, or in other words, there is an equal difference in cycles per second between successive pitches.

== =Isoharmonic chord ===

===Isoharmonic chord ===

An '''isoharmonic chord''' is a specific type of isodifferential chord, where the ratios between the notes are rational numbers, and therefore the chord is in just intonation. Such a chord can be built by successive jumps up the [[harmonic series]] by some number of steps. Since the harmonic series is arranged such that each higher step is smaller than the one before it, all isoharmonic chords have this same shape—with diminishing step size as one ascends.

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 In an '''isodifferential chord''' (known variously by '''linear chord''', '''equal-hertz chord''', '''equal-beating chord''', and '''proportional-beating chord'''), the frequencies of the pitches are in an arithmetic sequence, or in other words, there is an equal difference in cycles per second between successive pitches.
-== =Isoharmonic chord ===
+===Isoharmonic chord ===
 An '''isoharmonic chord''' is a specific type of isodifferential chord, where the ratios between the notes are rational numbers, and therefore the chord is in just intonation. Such a chord can be built by successive jumps up the [[harmonic series]] by some number of steps. Since the harmonic series is arranged such that each higher step is smaller than the one before it, all isoharmonic chords have this same shape—with diminishing step size as one ascends.