Posts tagged as «Shepard tone»

SoME 2010 April: Ping of Death

Sound Of the Month Edition

(2 IV 2010 note: this post was an April Fools Day joke. But if you were brave enough to listen you already figured that out ;)

Neural overload – induced consciousness loss

Ping of death - sonogram

Shepard's tone modulated with brainwave frequency

Brainwaves originate in cyclic feedback interactions among populations of neurons (Neural_oscillation). In macro scale we can observe it with electroencephalography (EEG). What’s more, we can also influence these cycles – human brain has a tendency to change its dominant EEG frequency towards the frequency of a dominant external stimulus (Brainwave entertainment). We can easily exploit that behavior :)

Brainwave stimulation is commonly used technique in marketing industry.

You probably noticed that the music used in advertisements sounds a bit different than the original tracks. A slight tone modulation can alter your attitude – get you a little happier or more excited… and more likely to buy a product. Many emo rock bands use the same technique but with opposite effect.

My idea is to make the human neural system synchronize with continuously ascending¬† Shepard frequency. Such attempt results in neural deadlock which causes temporal consciousness loss. In order to restore it’s critical functions the brain must cut-off all the inputs and go through coma stage (just like computer restarts after blue screen of death). The process is still in research stage, so in order to prove the phenomenon is safe for health I need a control group of humans.

Help me broadcast the Ping of Death over commercial radio station – please donate.

There might be different reactions after recovering from unconsciousness – varying from slight headache, just feeling refreshed or having weird thoughts. I also noticed the audio-induced coma might be a bit addictive, but no harm seems to be done. Please use headphones (for others sake), remove the nearby sharp objects and sit down comfortably:

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Falasol Timbre 1.0.2

(codename: Diesel Power)

Falasol’s engine has evolved!

This version introduces drastic performance optimization (both for speed & memory consumption). Those can be experienced especially on complex sounds (confirmed up to 3x faster sound generation with even more than 10x less memory on Shepard’s tone).

To bring some light on what has changed, let’s take a look at the Falasol’s architectural modules:

Architecture

Falasol's modular architecture

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Experiments: slur vs. cross-fade

There are several ways of moving smoothly from one tone to the other. Today we are going to compare the two most common: slurring and cross-fading.

Slur

Gliding over the notes smoothly (sliding the tone).

Guitar slide

Guitar slide


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