Posts in the «Noisy» Category

SoME 2010 July: Wind of Change

Sound Of the Month Edition

Gusty wind effect – achieved by applying double noise

Wind effect spectrogram

Wind effect spectrogram

330Hz harmonic randomized by both:

  • High 44100Hz frequency noise of 1.5 octave on Harmonic – the grains on the image
  • Low 1.5Hz frequency noise of 0.5 octave on Envelope – visible as hills

Let’s listen to it:

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Zipped falasol project. Quite chilly, huh?

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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.
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SoME 2010 May: Frequency of Chaos

Sound Of the Month Edition

Transition from random pitch sliding into pinkish noise

Spectrogram of random walk with rising temperature

880 Hz frequency randomized with standard variance of 1 octave and rising change rate

I took a simple 880 Hz sine wave and applied noise of standard variation = 1 octave.
At the beginning the random changes are slow – you can clearly hear the sliding tone. As the rate of changes gains more speed human ear tend to loose track of the tone and start hearing burping sounds. In the end, when the temperature gets really high (higher than tone frequency), the whole wave melts down into one uniform noise.

It’s just like blending a smoothie from an audio tone :)

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Falasol Timbre project zipped file: FrequencyOfChaos

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