Posts tagged as «Harmonic»

SoME 2010 Dec: Prime notes

Sound Of the Month Edition

Music of the prime numbers

Prime Notes visualization

Each harmonic corresponds to one prime number. A note is played on its beat-multiplication

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Zipped project

This idea was on my mind long before starting the whole Falasol project. What kind of cacophony would it be if each note is assigned a prime number and played only on the number’s multiplication beats. Total chaos? Or would the mind be able to recognize some hidden patterns?

It’s both. The brain can grasp 2 & 3-beat notes and arrange them into 6-beat tact ( 2 * 3 = 6 ). Next 5-beat harmonic creates a 30 beat verse (consisting of 5 described tacts). That’s the rhythmical clocking in the background. Next prime harmonics (7, 11, 13, 17, 19, 23, 29, 31, 37) add nothing more than chaotic wind-bells effect. The resulting patterns are way too long to be digested by the regular brain, but who knows, maybe some savant would do. Anyway, quite a good accompaniment to get insane :)

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SoME 2010 Aug: Harmonic Burst

Sound Of the Month Edition

Accelerating Vibrato makes a Sine wave explode into multiple harmonics

Harmonic Burst spectrogram

One sine wave + high speed frequency modulation

440 Hz harmonic modulated with speed: 0 -> 220 -> 0 [Hz] and amplitude: 0 -> 3 -> 0 [octave]

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Zipped Falasol project.

Looks like UFO and sounds like one :)

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SoME 2010 June: Chaos harmony

Sound Of the Month Edition

Harmonic noise vs Detuned noise

Harmonic noise spectrogram

Harmonic - noise applied to sound envelope

Detuned noise spectrogram

Detuned - noise applied separately to each harmonic

4 harmonics randomized by 1 octave normal deviation with slow frequency of 10hz.
…read more >>

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Experiments: Pitch perception

Natural or instrumental sounds usually consist of complex harmonic structure. In this post I’ll try to explore basics of human pitch perception.

According to wikipedia: “Pitch represents the perceived fundamental frequency of a sound”. Let’s try to validate it on a simple example – sample consisting of 4 harmonics – integer multiples of 440Hz: 440Hz, 880Hz, 1320Hz, 1760Hz. Below you can find a recording of the sample repeated four times, each time followed by a single successive harmonic:

Sound followed by each of 4 harmonics

Sound followed by each of 4 harmonics

4 harmonics (Timbre file – pitch 440 with 4 harmonics) …read more >>

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