Powharmonic series: Difference between revisions
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When we choose a <span><math>p</math></span> of the form <span><math>\log_{b}a</math></span>, the resulting scale will include every integer power of <span><math>a</math></span>, and the count of steps between each power of <span><math>a</math></span> will be equal to the next integer power of <span><math>b</math></span>. | When we choose a <span><math>p</math></span> of the form <span><math>\log_{b}a</math></span>, the resulting scale will include every integer power of <span><math>a</math></span>, and the count of steps between each power of <span><math>a</math></span> will be equal to the next integer power of <span><math>b</math></span>. | ||
Extending the naming scheme ''p-powharmonic series'', we call this a ''log-base-b-of-a-powharmonic series''. | |||
For example, the log-base-3-of-2-powharmonic series, where <span><math>p = log_{3}2</math></span>, will — like the harmonic series — include every octave of the fundamental. However, instead of the octaves containing counts of pitches in increasing powers of 2 | For example, the log-base-3-of-2-powharmonic series, where <span><math>p = log_{3}2</math></span>, will — like the harmonic series — include every octave of the fundamental. However, instead of the octaves containing counts of pitches in increasing powers of 2: | ||
<math>2, 4, 8, 16… | <math>2, 4, 8, 16… | ||
</math> | </math> | ||
they’ll contain counts of pitches in increasing powers of 3 | they’ll contain counts of pitches in increasing powers of 3: | ||
<math>3, 9, 27, 81… | <math>3, 9, 27, 81… | ||
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# whenever <span><math>x</math></span> is an integer power (squared, cubed, etc.) of <span><math>b</math></span>, <span><math>\log_{b}x</math></span> will be an integer | # whenever <span><math>x</math></span> is an integer power (squared, cubed, etc.) of <span><math>b</math></span>, <span><math>\log_{b}x</math></span> will be an integer | ||
# whenever <span><math>\log_{b}x</math></span> is an integer, we raise <span><math>a</math></span> to an integer power | # whenever <span><math>\log_{b}x</math></span> is an integer, we raise <span><math>a</math></span> to an integer power | ||
# <span><math>x</math></span> increments linearly by 1 | # <span><math>x</math></span>, being the pitch # or index, increments linearly by 1 | ||
# it takes longer and longer each time for <span><math>x</math></span> to reach the next power of <span><math>b</math></span> | # it takes longer and longer each time for <span><math>x</math></span> to reach the next power of <span><math>b</math></span> | ||