User:Dummy index/About harmonics: Difference between revisions
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Dummy index (talk | contribs) Created page with "==Odd-harmonic sounds== If you play 4:5:6:7 tetrad with several EDOs and some synths, you'll hear a clear beat. Play 4:5, 4:6, 4:7, ... and you'll found that the beat is mainl..." |
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If you play 4:5:6:7 tetrad with several EDOs and some synths, you'll hear a clear beat. Play 4:5, 4:6, 4:7, ... and you'll found that the beat is mainly caused by 5:7 interval. Synth's preset sound is often square wave or triangular wave, both [[Oddharmonic series|odd-harmonics]]. They don't have 4th harmonics, so 4:7 dyad actually no wah, no beat. 5:7 is the only pair available to beating. Therefore I care about 7/5 interval in [[User:Dummy index/Random lists of temperaments by generator size]]. | If you play 4:5:6:7 tetrad with several EDOs and some synths, you'll hear a clear beat. Play 4:5, 4:6, 4:7, ... and you'll found that the beat is mainly caused by 5:7 interval. Synth's preset sound is often square wave or triangular wave, both [[Oddharmonic series|odd-harmonics]]. They don't have 4th harmonics, so 4:7 dyad actually no wah, no beat. 5:7 is the only pair available to beating. Therefore I care about 7/5 interval in [[User:Dummy index/Random lists of temperaments by generator size]]. | ||
Odd-harmonic sounds also suppress | Odd-harmonic sounds also suppress the beat of 1:2. It's insensitive to octave stretching/shrinking. | ||
Is it reducing the | Is it reducing the dissonance, or reducing the consonance? | ||
==Piano sounds== | ==Piano sounds== | ||
| Line 14: | Line 14: | ||
λ/8 (recent grand piano?): | λ/8 (recent grand piano?): | ||
* suppress 4:8, 8:16, get clearer octave, almost free from inharmonicity. | * suppress 4:8, 8:16, get clearer octave, almost free from inharmonicity. | ||
* suppress 8:9, clearer 200¢. | |||
* suppress 19:24, clearer 400¢. | * suppress 19:24, clearer 400¢. | ||
* suppress 5:8, clearer 800¢. | |||
λ/6 (upright piano?): | λ/6 (upright piano?): | ||
* suppress 4:6, 6:9, 8:12, get clear perfect-fifth, easy to hear the beat of 2:3, suitable for beat-based tuning techniques. | * suppress 4:6, 6:9, 8:12, get clear perfect-fifth, easy to hear the beat of 2:3, suitable for beat-based tuning techniques. | ||
* suppress 5:6, clearer 300¢. | |||
* suppress 19:24, clearer 400¢. | * suppress 19:24, clearer 400¢. | ||
* suppress 12:19, clearer 800¢. | * suppress 12:19, clearer 800¢. | ||
Latest revision as of 13:58, 3 February 2022
Odd-harmonic sounds
If you play 4:5:6:7 tetrad with several EDOs and some synths, you'll hear a clear beat. Play 4:5, 4:6, 4:7, ... and you'll found that the beat is mainly caused by 5:7 interval. Synth's preset sound is often square wave or triangular wave, both odd-harmonics. They don't have 4th harmonics, so 4:7 dyad actually no wah, no beat. 5:7 is the only pair available to beating. Therefore I care about 7/5 interval in User:Dummy index/Random lists of temperaments by generator size.
Odd-harmonic sounds also suppress the beat of 1:2. It's insensitive to octave stretching/shrinking.
Is it reducing the dissonance, or reducing the consonance?
Piano sounds
Striking point of the string.
λ/7 (traditional?):
- suppress all x:7.
λ/8 (recent grand piano?):
- suppress 4:8, 8:16, get clearer octave, almost free from inharmonicity.
- suppress 8:9, clearer 200¢.
- suppress 19:24, clearer 400¢.
- suppress 5:8, clearer 800¢.
λ/6 (upright piano?):
- suppress 4:6, 6:9, 8:12, get clear perfect-fifth, easy to hear the beat of 2:3, suitable for beat-based tuning techniques.
- suppress 5:6, clearer 300¢.
- suppress 19:24, clearer 400¢.
- suppress 12:19, clearer 800¢.