spectrum

AudioSpectrumVumeter (Composition by rbetin)

Author: rbetin
License: Creative Commons Attribution-NoDerivs
Date: 2011.11.19
Compatibility: 10.6, 10.7
Categories:
Required plugins:
Kineme Audio Tools

Audio Spectrum Vumeter with 50 up to 10KHz visualizer.

Select input with Up/Down arrow keys. Master volume, channel and peak sensitivity.

mesh waveform mapping (Composition by dust)

Author: dust
License: MIT
Date: 2010.10.22
Compatibility: 10.6
Categories:
Required plugins:
(none)

this filter takes the audio spectrum and displaces mesh vertex points much like you would with a displacement map image. mesh and kineme audio location input required. there are parameters to control the amount of displacement for all xyz points.

Audio Spectrogram

LuxAqu's picture

Ok I'm very new to Quartz Composer but I've been trying to find a way to create a visualizer that maps the octaves of sound directly to the visible spectrum. This is based on the idea that the visible spectrum is essentially one octave of electromagnetic radiation. More about that theory here: http://lukenimtz.com

Thanks to AudioTools I was able to get a decent resolution for the frequency spectrum, but being a noob I ran into a lot of technical problems that I didn't understand (with particles and iterators and render in image patches...) Plus I wasn't sure how to best capture the composition in action. In any case, I finally have something to show:

multi-touch music box

dust's picture

so this is a comp i have been working on. it is a pretty intensive process as i am using quartz composer, unity3d, and ableton live. in future versions im pretty sure this will have to be a multi machine set up one for rendering one for audio etc..

any thought on how a 3d osc/tuio/midi node graph type of program should work. its all experimental at the moment so i'm making it up as i go along.

the basic idea is to be able to place these nodes or units i'm calling them in chains on the screen to be able to make up graph that produces usable midi data for synthesis. the quick low down is, this patch is sending the position, rotation and scale vectors as midi control messages as well as a randomized arbitrary midi note map to ableton.

this is currently in progress but if anybody is into experimental ways of making music and wants to try this. i'm happy to supply the binary quartz builder and unity files as it seems things run smoother from the binaries.

here is a more detailed explanation from vimeo...

this is an early experimental multi-touch music project, i am working on. it is inspired by the reactable and utilizes the tuio protocol to transmit cursor data to unity via xTuio. in addition to being rendered in unity, quartz composer is being used to parse the spectrums peak amplitude for each instrument that is also being feed into the unity render engine via osc to visualize the waveform between the 3d music box nodes.

there are two types of nodes that both transmit midi note and control data to ableton live for synthesis. the two type of nodes are a synth unit and fx unit. although the nodes act as two different classes they are inherently the same objects transmitting the same data to live.

meaning the fx unit nodes also can act as a synth node and utilize its midi note data and like wise the synth unit nodes also send midi control messages. the nodes are transmitting a random note in the range of 0 to 8. this note is subsequently parsed and retransmitted to live in a particular scale. in addition music box is also sending 8 harmonic notes based on transformation logic as well as transmitting the subsequent rotation, position and local scale vectors for each node as midi control message.

so what this means is you could use a two finger pinch zoom to scale the node up which in turn can be mapped to an instruments amplitude or what ever parameter you would want scale to be used for. although this video is only showing positional usage both position and rotation vectors are sent to live as midi cc. doing a pinch zoom pivot rotation will give the xyz rotational messages to subsequently map.

the fx units are chained to the synth unit nodes via a spring joint so that the position of the fx unit can modify the location and rotation of the synth node by utilizing rigid body physics. meaning that the control messages of the synth unit can also be effected by the fx unit and vice versa. this is all experimental and there is no right configuration at the moment.

Midi and Frequency Note Number Indexed Macro (Composition by dust)

Author: dust
License: MIT
Date: 2010.03.18
Compatibility: 10.6
Categories:
Required plugins:
(none)

This macro converts notes like a4 to Hz 440 or to midi numbers like 69. It requires tuning input in the form of Hz.