[microsound-announce] [Noish] Bird Like Object @uzusounds

Oskoff noishx at gmail.com
Fri Aug 22 07:26:09 EDT 2014

Hi all! my new  release @ Uzusounds:


*[Noish] BIRD LIKE OBJECT*1. blo I.     binaural
archive.org <https://archive.org/details/Noish_Bird_Like_Object_1>
2. blo II.    binaural 4CH
3. blo III.   binaural 4CH
4. blo IV.   binaural 4CH
5. blo V.    binaural 4CH

Programmed, recorded  at txukrut studio
Edited and mastered at Phonos Foundation's studio
Barcelona 2013

BIRD LIKE OBJECT  is a monthly published series of 5 experimental audio
works based on the sound  exploration  of the << boids algorithm >>. The five
piecess are produced and composed for four audio channel system but also
have been mixed in binaural stereo version.

For the generation of the sound material i coded a custom software using
Pure Data environment. I build a "instrument" linked a 2d boids visual
implementation with a basic AM four channel audio synthesizer.

Flocking boids is a computer model for the coordinated motion of groups (or
flocks) of entities called boids.Flocking represents group movementas seen
in bird flocks and fish schoolsas combinations of steering behaviors for
individual boids, based on the position and velocities of nearby
flockmates. Though individual flocking behaviors (sometimes called rules)
are quite simple, they combine to give boids and flocks interesting overall
behaviors, which would be complicated to program explicitly.

Flocking is often grouped with Artificial Life algorithms because of its
use of emergence: complex global behaviors arise from the interaction of
simple local rules. A crucial part of this complexity is its
unpredictability over time; a boid flying in a particular direction may do
something different a few moments later. Flocking was first proposed by
Craig Reynolds in his paper << Flocks, Herd, and Schools: A Distributed
Model, >> published in Computer Graphics, 21(4), SIGGRAPH'87, pp. 25-34.

The basic flocking model consists of three simple steering behaviors (or

Steer to avoid crowding local flockmates.

Steer toward the average heading of local flockmates.

Steer to move toward the average position of local flockmates.

The instrument use two groups of four "birds". They are in a 2D space.

Group 1 (A1(x,y), B1(x,y), C1(x,y),D1(x,y))
Group 2 (A2(x,y), B2(x,y), C2(x,y),D2(x,y))

Amplidtud modulation with sawtooth oscilators. There are 8 am modules, i
connect the value of A1(X) with the freq of the carrier oscilator and A2(Y)
is conect to the freq of the modulation oscilator in the am module 1, the
same with the others..

AM mod 2 ( carrier = B1(X), modulation = B2(Y) )
AM mod 3 ( carrier = C1(X), modulation = C2(Y) )
AM mod 4 ( carrier = D1(X), modulation = D2(Y) )
AM mod 5 ( carrier = A2(X), modulation = A1(Y) )
AM mod 6 ( carrier = B2(X), modulation = B1(Y) )
AM mod 7 ( carrier = C2(X), modulation = C1(Y) )
AM mod 8 ( carrier = D2(X), modulation = D1(Y) )

finaylly the 8 modules are remixer to 4 outputs, 2 per each channel.
Channel 1 ( mod 1 & mod 5 ), channel 2 (mod 2 & mod 6), channel 3 (mod 3 &
mod 7) and channel 4 (mod 4 & mod 8)

Copyfight 2014



oscar martin  &&   [noish]
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