GMU:(In)Visible Networks/Sebastian Chiriboga: Difference between revisions

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-==Unity==
-*terrain
-*snake (developed with blender)
-==Sound performance (3 min)==
+==Concept==
-*ableton live
+Get your own resonce frequency / Based on Schumanns resonance theorie.
-*OSCprotocol
+(Binaural Sounds)
-*basic image is triggered by sound / dancing "snake"
+"The Schumann resonances (SR) are a set of spectrum peaks in the extremely low frequency (ELF) portion of the Earth's electromagnetic field spectrum. Schumann resonances are global electromagnetic resonances, generated and excited by lightning discharges in the cavity formed by the Earth's surface and the ionosphere.
-*different sounds make snake move
-*real time sound input makes snake move
-*by movements you beat the snake
-==Sound performance 2==
+This global electromagnetic resonance phenomenon is named after physicist Winfried Otto Schumann who predicted it mathematically in 1952. Schumann resonances occur because the space between the surface of the Earth and the conductive ionosphere acts as a closed waveguide. The limited dimensions of the Earth cause this waveguide to act as a resonant cavity for electromagnetic waves in the ELF band. The cavity is naturally excited by electric currents in lightning. Schumann resonances are the principal background in the part of the electromagnetic spectrum from 3 Hz through 60 Hz, and appear as distinct peaks at extremely low frequencies (ELF) around 7.83 Hz (fundamental), 14.3, 20.8, 27.3 and 33.8 Hz."
-*Sound is activated by moving object/human
-==concept==
+https://en.wikipedia.org/wiki/Schumann_resonances
-*European folklore
-*metaphor of the snake -> nature
-*killing snake -> human domination in the world -> people control nature
-==technical setup==
+[[File:1-lightningmad.jpg|400px]][[File:Schumann_resonance_01_en.png|400px]]
-moving person (or object) around the performance platform triggers the sound on ableton.
+"A binaural beat is an auditory illusion perceived when two different pure-tone sine waves, both with frequencies lower than 1500 Hz, with less than a 40 Hz difference between them, are presented to a listener dichotically (one through each ear). For example, if a 530 Hz pure tone is presented to a subject's right ear, while a 520 Hz pure tone is presented to the subject's left ear, the listener will perceive the auditory illusion of a third tone, in addition to the two pure-tones presented to each ear. The third sound is called a binaural beat, and in this example would have a perceived pitch correlating to a frequency of 10 Hz, that being the difference between the 530 Hz and 520 Hz pure tones presented to each ear.
+Frequency bands of cortical neural ensembles
+The fluctuating frequency of oscillations generated by the synchronous activity of cortical neurons, measurable with an electroencephalogram (EEG), via electrodes attached to the scalp, are conveniently categorized into general bands, in order of decreasing frequency, measured in Hertz (Hz) as follows:
+Gamma, 30 to 50 Hz
+Beta, 14 to 30 Hz
+Alpha, 8 to 14 Hz
+Theta, 4 to 8 Hz
+Delta, 0.1 to 4 Hz
+In addition, three further wave forms are often delineated in electroencephalographic studies:
+Mu, 8 to 12 Hz
+Sigma (sleep spindle), 12 to 14 Hz
+SMR (Sensory motor rhythm), 12.5 to 15.5 Hz
+It was Berger who first described the frequency bands Delta, Theta, Alpha, and Beta.
+Neurophysiological origin of binaural beat perception
+Binaural-beat perception originates in the inferior colliculus of the midbrain and the superior olivary complex of the brainstem, where auditory signals from each ear are integrated and precipitate electrical impulses along neural pathways through the reticular formation up the midbrain to the thalamus, auditory cortex, and other cortical regions. "
+https://en.wikipedia.org/wiki/Binaural_beats
+===Project description===
+In our case, instead of the requiered "lightning" for producing the sound frequency, we will use a sample created by a bass intrument of a Midi Keyboard, it will be linked to a Hertz controller knob and we will get a unique sound tuned up into a certain range of values in Hz. This values would be changed by -movement- within our working area.
+What could we achieve?
+We will use the video tracking system to control through random movements, effects like RingSyncFrequency, LFO speed, FilterReso and the volume of an Idoser. All those effects are linked to the original/base sample. This interaction of movements and sound effects will porduce sound and you could find your "Own unique binaural beat" . This soundit will make you feel either relaxed, exited or you will just faint, because you will control the amount of Hertz of the sound.
+===Technical aspects===
+We would use a sound trigger patch designed in PureData that would allow us to use the OSC protocol in order to receive data from the movements and all that will afect at the time the effects that are mapped to the the original/base sample.
+===Patches===
+*[[:File:midi-to-osc.pd]]
+*[[:File:trigger_audio.pd]]
+===Samples===
+*[[:File:Pd BaseSAmple.wav]]
+*[[:File:Pd BaseSAmple Example.wav]]
+===Realated projects===
+https://www.youtube.com/watch?v=DSlCq_NIq0M
+{{#ev:youtube|DSlCq_NIq0M}}