Powharmonic series: Difference between revisions
Cmloegcmluin (talk | contribs) Created page with "A powerharmonic series, like the harmonic series, is an infinitely ascending set of pitches from which scales can be drawn. A powharmon..." |
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For example, the 0.69314718056-powharmonic series gives the series of pitches: | For example, the 0.69314718056-powharmonic series gives the series of pitches: | ||
{| class="wikitable" | |||
frequency multiplier pitch ¢ octave reduced ¢ | |+ | ||
1 0.00 0.00 | !pitch # | ||
1.616806672 831.78 831.78 | |'''frequency multiplier definition''' | ||
2.141486064 1318.33 118.33 | |'''frequency multiplier (decimal)''' | ||
2.614063815 1663.55 463.55 | |'''pitch (¢)''' | ||
3.05132936 1931.33 731.33 | |'''pitch Δ (¢)''' | ||
3.462368957 2150.11 950.11 | |'''octave reduced pitch (¢)''' | ||
3.852807616 2335.09 1135.09 | |- | ||
4.226435818 2495.33 95.33 | |1 | ||
4.585962562 2636.67 236.67 | |1<sup>0.69314718056</sup> | ||
4.933409668 2763.10 363.10 | |1 | ||
5.270337212 2877.47 477.47 | |0.00 | ||
5.597981231 2981.89 581.89 | | - | ||
5.917342318 3077.94 677.94 | |0.00 | ||
6.22924506 3166.87 766.87 | |- | ||
6.5343793 3249.66 849.66 | |2 | ||
6.833329631 3327.11 | |2<sup>0.69314718056</sup> | ||
|1.616806672 | |||
|831.78 | |||
|831.78 | |||
|831.78 | |||
|- | |||
|3 | |||
|3<sup>0.69314718056</sup> | |||
|2.141486064 | |||
|1318.33 | |||
|486.56 | |||
|118.33 | |||
|- | |||
|4 | |||
|4<sup>0.69314718056</sup> | |||
|2.614063815 | |||
|1663.55 | |||
|345.22 | |||
|463.55 | |||
|- | |||
|5 | |||
|5<sup>0.69314718056</sup> | |||
|3.05132936 | |||
|1931.33 | |||
|267.77 | |||
|731.33 | |||
|- | |||
|6 | |||
|6<sup>0.69314718056</sup> | |||
|3.462368957 | |||
|2150.11 | |||
|218.79 | |||
|950.11 | |||
|- | |||
|7 | |||
|7<sup>0.69314718056</sup> | |||
|3.852807616 | |||
|2335.09 | |||
|184.98 | |||
|1135.09 | |||
|- | |||
|8 | |||
|8<sup>0.69314718056</sup> | |||
|4.226435818 | |||
|2495.33 | |||
|160.24 | |||
|95.33 | |||
|- | |||
|9 | |||
|9<sup>0.69314718056</sup> | |||
|4.585962562 | |||
|2636.67 | |||
|141.34 | |||
|236.67 | |||
|- | |||
|10 | |||
|10<sup>0.69314718056</sup> | |||
|4.933409668 | |||
|2763.10 | |||
|126.43 | |||
|363.10 | |||
|- | |||
|11 | |||
|11<sup>0.69314718056</sup> | |||
|5.270337212 | |||
|2877.47 | |||
|114.37 | |||
|477.47 | |||
|- | |||
|12 | |||
|12<sup>0.69314718056</sup> | |||
|5.597981231 | |||
|2981.89 | |||
|104.41 | |||
|581.89 | |||
|- | |||
|13 | |||
|13<sup>0.69314718056</sup> | |||
|5.917342318 | |||
|3077.94 | |||
|96.05 | |||
|677.94 | |||
|- | |||
|14 | |||
|14<sup>0.69314718056</sup> | |||
|6.22924506 | |||
|3166.87 | |||
|88.93 | |||
|766.87 | |||
|- | |||
|15 | |||
|15<sup>0.69314718056</sup> | |||
|6.5343793 | |||
|3249.66 | |||
|82.79 | |||
|849.66 | |||
|- | |||
|16 | |||
|16<sup>0.69314718056</sup> | |||
|6.833329631 | |||
|3327.11 | |||
|77.45 | |||
|927.11 | |||
|} | |||
The harmonic series is technically a powharmonic series: the 1-powharmonic series. | The harmonic series is technically a powharmonic series: the 1-powharmonic series. | ||
== log-base-b-of-a-powharmonic series == | == log-base-b-of-a-powharmonic series == | ||
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>. | ||
By extension of the naming scheme ''p-powharmonic series'', we call this a ''log-base-b-of-a-powharmonic series''. | By extension of the naming scheme ''p-powharmonic series'', we call this a ''log-base-b-of-a-powharmonic series''. | ||