accelerometer

Video: YouTube: Drancing accelerometer music with Wiimotes: 3D variable frequency oscillators + amplitude variation + triggered "air drum" samples

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Demonstrates combined oscillator frequency variation, amplitude variation, and triggered Drum sample ("Drumming by Dancing") modes along with Drancel RGB monitor visuals projected onto the "Drancer" performer.

For this demonstration two hand-held WiiTM Remotes on a MacBook Pro were used. (The original Drancing accelerometer suit (since 1997) used 5 triaxial accelerometers in a "body star" pattern").

"Drancel Planetscapes" accelerometer art

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"Planet Drancel" accelerometer art

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Video: 2 Drancel RGB acceleration synthesis atoms: Drancing colour=sound synthesis principle in 3D (with 3 VFOs each driven by Nintendo Wiimotes)

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Demonstrates two hemispherical Drancel RGB virtual accelerometer synthesis atoms, with orthogonal "light cones" (which correspond to LEDs with reflectors). The sound here is synthesised from Wiimote signals driving 3 Variable Frequency Oscillators (VFOs) per Drancel RGB in Pure Data; the visuals are in GEM.

Video: 2 Drancel RGB acceleration synthesis atoms: Drancing colour=sound synthesis principle in 3D (with 3 VFOs driven by simulated sinusoidal signals)

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Demonstrates two hemispherical Drancel RGB accelerometer synthesis atoms, with orthogonal "light cones" (which can correspond to LEDs with reflectors). The sound here is synthesised from simulated sinusoidal accelerometer signals driving Variable Frequency Oscillators (VFOs) in Pure Data; the visuals are in GEM.

Drancing: overview of all videos involving the Drancing accelerometer music system and the Drancel RGB sound and light synthesis atom

A dynamic listing of all videos involving Drancing and the Drancel RGB accelerometer synthesis atom.

Drancing and Drancel RGB videos

Video: YouTube: Drancing accelerometer music with Wiimotes: 3D variable frequency oscillators + amplitude variation + triggered "air drum" samples

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Demonstrates combined oscillator frequency variation, amplitude variation, and triggered Drum sample ("Drumming by Dancing") modes along with Drancel RGB monitor visuals projected onto the "Drancer" performer.

For this demonstration two hand-held WiiTM Remotes on a MacBook Pro were used. (The original Drancing accelerometer suit (since 1997) used 5 triaxial accelerometers in a "body star" pattern").

Video: YouTube: Drancing accelerometer music with Wiimotes: 3D amplitude (volume) variation + triggered "air drum" samples

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Demonstrates combined amplitude (volume) variation, and triggered drum samples ("Drumming by Dancing", "air drums") modes along with Drancel RGB monitor visuals projected onto the "Drancer" performer. Includes stereo echo with constant timescale and some feedback.

For this demonstration two hand-held WiiTM Remotes on a MacBook Pro were used. (The original Drancing accelerometer suit (since 1997) used 5 triaxial accelerometers in a "body star" pattern").

Video: YouTube: Drancing accelerometer music with Wiimotes: 3D variable frequency oscillators + triggered "air drum" samples

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Demonstrates variable frequency oscillators + triggered drum samples ("Drumming by Dancing", "air drums") modes along with Drancel RGB monitor visuals projected onto the "Drancer" performer.

For this demonstration two hand-held WiiTM Remotes on a MacBook Pro were used.

Video: 2 Drancers (acceleration avatars) each with 5 Drancels: in PureData/GEM Prototype of DranceWare: Driven by Wiimote

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Demonstrates 2 "Drancer" acceleration avatars, each with 5 Drancel RGB triaxial accelerometer synthesis atoms, with orthogonal "light cones" (which correspond to LEDs with reflectors). The sound here is synthesised from 2 sets of WiiTM Remote accelerometer signals driving Variable Frequency Oscillators (VFOs) in Pure Data; the visuals are in GEM. (For this demonstration every Drancel RGB of each Drancer receives the same signals.)

Video: 2 Drancers (acceleration avatars) each with 5 Drancels: in PureData/GEM Prototype of DranceWare: rotating camera: driven by Wiimote

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Demonstrates 2 "Drancer" acceleration avatars, each with 5 Drancel RGB triaxial accelerometer synthesis atoms, with orthogonal "light cones" (which correspond to LEDs with reflectors). The sound here is synthesised from 2 sets of WiiTM Remote accelerometer signals driving Variable Frequency Oscillators (VFOs) in Pure Data; the visuals are in GEM. (For this demonstration every Drancel RGB of each Drancer receives the same signals.)

Video: The Drancel RGB triaxial accelerometer colour=sound synthesis principle (with 3 Variable Frequency Oscillators): driven by Wiimote

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A minimal example of Drancel RGB 2D visuals. The colour of the central circle is an average over the RGB colours corresponding to the XYZ axes of a triaxial accelerometer. Driven by a WiiTM Remote as wireless accelerometer signal source.

Video: Drancel RGB accelerometer "light horns" sound=colour synthesis principle (with 3 Variable Frequency Oscillators): driven by Wiimote

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Demonstrates one Drancel RGB accelerometer synthesis atom design, with orthogonal "light cones" (which can correspond to LEDs with reflectors). The sound here is synthesised from WiiTM Remote accelerometer signals driving Variable Frequency Oscillators (VFOs) in Pure Data; the visuals are in GEM.

Video: The Drancel RGB virtual triaxial accelerometer: colour=sound synthesis principle in 3D (with 3 VFOs and simulated sinusoidal signals)

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Demonstrates one Drancel RGB accelerometer synthesis atom design, with orthogonal "light cones" (which can correspond to LEDs with reflectors). The sound here is synthesised from simulated sinusoidal accelerometer signals driving Variable Frequency Oscillators (VFOs) in Pure Data; the visuals are in GEM.

Video: 1 Drancer (acceleration avatar) with 5 Drancel RGB virtual triaxial accelerometers: colour=sound synthesis principle in 3D (PureData/GEM) 3 VFOs per Drancel and simulated sinusoidal signals

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Demonstrates one "Drancer" (an acceleration avatar for the Drancing accelerometer music system) with 5 Drancel RGB accelerometer synthesis atoms (corresponding to hands/wrists, feet/ankles, and waist). The sound here is synthesised from simulated sinusoidal accelerometer signals driving Variable Frequency Oscillators (VFOs) in Pure Data; the visuals are in GEM.

Video: 2 Drancers (acceleration avatars) each with 5 Drancel RGB virtual triaxial accelerometers: Drancing colour=sound synthesis principle in 3D (with 3 VFOs and simulated sinusoidal signals)

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Demonstrates two "Drancers" (acceleration avatars of the Drancing accelerometer music system) with 5 Drancel RGB accelerometer synthesis atoms (corresponding to hands/wrists, feet/ankles, and waist). The sound here is synthesised from simulated sinusoidal accelerometer signals driving Variable Frequency Oscillators (VFOs) in Pure Data; the visuals are in GEM.

Video: 2 Drancel RGB acceleration synthesis atoms: Drancing colour=sound synthesis principle in 3D (with 3 VFOs driven by simulated sinusoidal signals)

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Demonstrates two hemispherical Drancel RGB accelerometer synthesis atoms, with orthogonal "light cones" (which can correspond to LEDs with reflectors). The sound here is synthesised from simulated sinusoidal accelerometer signals driving Variable Frequency Oscillators (VFOs) in Pure Data; the visuals are in GEM.

Video: 2 Drancel RGB acceleration synthesis atoms: Drancing colour=sound synthesis principle in 3D (with 3 VFOs each driven by Nintendo Wiimotes)

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Demonstrates two hemispherical Drancel RGB virtual accelerometer synthesis atoms, with orthogonal "light cones" (which correspond to LEDs with reflectors). The sound here is synthesised from Wiimote signals driving 3 Variable Frequency Oscillators (VFOs) per Drancel RGB in Pure Data; the visuals are in GEM.

Video: Drancing suit 2002: "air DJ" scratching: variable frequency + variable amplitude

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So who needs a turn-table ? Look Mum, no hands !

Video: Drancing suit 2002: Drumming-by-Dancing "air drums" sample triggering mode

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The original "Drumming-by-Dancing" (a.k.a. non-tactile "air drums") mode after which Drancing was named. Drum samples are triggered by conditioned triaxial accelerometer signals driven by free body movement.

Video: Drancing suit 2002: hi-energy sporty: variable frequency + variable amplitude

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Physical exertion is expressed by the variation of frequencies and amplitudes of 15 sine wave oscillators by 5 triaxial accelerometers.

Video: Drancing suit 2002: amplitude (volume) variation of the notes of a triad chord

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The (X,Y,Z) channels of five 3D accelerometers vary the amplitudes of notes of fixed (C,E,G) chords at different octaves. When the amplitude varies by small amounts about a larger mean value (such as when waving the arms about a common raised level) the mode can be said to represent Amplitude Modulation (AM).

This is a subtle mode, and care must be taken to sufficiently distinguish the notes of each chord triad. Amplitude variation can also be well combined with other modes such as variation of the frequency of oscillators.

Video: Drancing suit 2002: triaxial accelerometer sound axes: variable frequency and variable amplitude modes

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Demonstration of the axes of a triaxial accelerometer using sound synthesis. The relationship to gravity is explored using vector acceleration with 3D Variable Frequency Oscillator (VFO) mode, then amplitude variation "triaxial chord" mode.

Video: Drancing suit 2002: variable frequency + variable amplitude mode

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The (X,Y,Z) channels of five 3D accelerometers vary the amplitudes and the frequencies of 5 x 3 = 15 pure sinusoidal oscillators.

One can hear "beat" frequencies generated by similar frequencies corresponding to different accelerometer channels, such as when the arms are raised to similar levels, which effect can be exploited for musical nuance and for movement therapy to measure symmetry of posture.

And visit also: Mini videos from a Drancel RGB LED light show

Terminology: A Drancer is an "acceleration avatar" of the Drancing accelerometer music and visuals system

Because Dr Darren's Drancing accelerometer music and visuals synthesis system employs specifically acceleration, it has a special kind of "acceleration avatar" called a Drancer, where typically one Drancing performer (also known as a Drancer) typically wears 5 triaxial accelerometers in a "body star" pattern (reminiscent of Da Vinci's Vitruvian Man), which map to 3D Drancel RGB virtual synthesis atoms in the Drancer's acceleration avatar.

However, unlike many motion capture animation systems (such as those used in big budget films), where the emphasis is on spatial location, the Drancing system focuses "organically" on acceleration signals. So although the Drancer avatar can be represented in a physical space to remind us of the body star configuration, the mapped positions and perturbations (driven by conditioned accelerometer signals) of each virtual Drancel RGB in synthesised Drancing visuals are not intended to precisely reflect spatial positions.

So why does Drancing embrace acceleration alone in this way ? Because acceleration - unlike velocity or position - does not need a reference system, and this means that the Drancing system is in principle (and by design) able to be used anywhere, over a very large region, while riding your bike, or exercising, or dancing, or jogging, anywhere, anytime, even underwater or in space, without the need for a reference system.
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