VilsonVieira em 19h02min de 5 de junho de 2012

2012-06-05T19:02:18Z

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	FooBarBaz é experimento em livecoding. Apresentado no Festival Contato 2011.		FooBarBaz é experimento em livecoding. Apresentado no Festival Contato 2011.

			[[Image:Foobarbaz6.jpg]]
	[[Image:Foobarbaz1.jpg]]		[[Image:Foobarbaz1.jpg]]
	[[Image:Foobarbaz2.jpg]]		[[Image:Foobarbaz2.jpg]]
	[[Image:Foobarbaz3.jpg]]		[[Image:Foobarbaz3.jpg]]
			[[Image:Foobarbaz4.jpg]]
			[[Image:Foobarbaz5.jpg]]
			[[Image:Foobarbaz7.jpg]]


	ChucK, Vim, Emacs, Puredata, Cowsay.		ChucK, Vim, Emacs, Puredata, Cowsay.

Rfabbri: /* Códigos */

2012-06-05T18:47:27Z

Códigos

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	== Códigos ==		== Códigos ==

	Para os códigos usados ~~no projeto~~, veja [[AudioArt]].		Para os códigos usados, veja [[AudioArt]].

	== Vídeos ==		== Vídeos ==

VilsonVieira em 18h44min de 5 de junho de 2012

2012-06-05T18:44:47Z

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VilsonVieira: Nova página: FooBarBaz é experimento em livecoding. Apresentado no Festival Contato 2011. Mais sobre Livecoding. == Códigos == Para os códigos usados no projeto, veja AudioArt. == V...

2012-06-05T18:35:19Z

Nova página: FooBarBaz é experimento em livecoding. Apresentado no Festival Contato 2011. Mais sobre Livecoding. == Códigos == Para os códigos usados no projeto, veja AudioArt. == V...

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FooBarBaz é experimento em livecoding. Apresentado no Festival Contato 2011.

Mais sobre [[Livecoding]].

== Códigos ==

Para os códigos usados no projeto, veja [[AudioArt]].

== Vídeos ==

- live coding presentation, part 1 a basic principles of the live coding presentation we did on 20/11/2011 for about 3,5 thousand people on Festival CONTATO, São Carlos, Brazil.

http://vimeo.com/33012735

- live coding presentation part1 b: REM and cows about Rapid Eyes Movement (REM) and use of cows in the live coding presentation we did on 20/11/2011 for about 3,5 thousand people on Festival CONTATO, São Carlos, Brazil.

http://vimeo.com/33018740

- live coding presentation part2 improvisation improvisation part of the live coding presentation we did on 20/11/2011 for about 3,5 thousand people on Festival CONTATO, São Carlos, Brazil.

http://vimeo.com/33019291

- presentation part3 soundscapes The part where we used soundscapes in the live coding presentation we did on 20/11/2011 for about 3,5 thousand people on Festival CONTATO, São Carlos, Brazil.

http://vimeo.com/33025717

- presentation part4 improvisation2 ending endind of the live coding presentation we did on 20/11/2011 for about 3,5 thousand people on Festival CONTATO, São Carlos, Brazil.

http://vimeo.com/33025913

== Relembrando o experimento ==

Renato Fabbri por lists.cs.princeton.edu 28/11/11 para ChucK

This is what I used and it was quite enough given the execussion had another
live coder and a PD and mixer improviser:

http://ubuntuone.com/7P9ZFMFVVa9cBr4LZ1xtjg

My replace map doesnt work though (last line of the text file on the link). Any idea? BTW, we live coded for more de 2 thousand people here in Brasil at
Festival Contato. Some say about ~5 thousand, i guess ~3,5k. Chuck live-coding with Vim rvl3z. Vilson Vieira, the other live-coder, used Emacs. We projected both desktops at the same time.

cheers!,

Renato

----

Renato Fabbri 30/11/11 para ChucK

well, i wanted to do any documentation of what i did, so here it goes as it came. No sound, just a visual screenshot (perfect for reading as you hear some music of your preference :P) I did not see how it is and cant look that now. The mpeg files are running ok here, i am using mplayer in linux. But they did not run in Kaffeine and another player (dont reacall its name).

presentation-part1.mpeg
http://ubuntuone.com/0w8vde6POCJdUhAfDRCB0G

presentation-part1-REM-and-cows.mpeg
http://ubuntuone.com/2biXjEGbLARAG9gyJf8MmL

presentation-part2-improvisation.mpeg
http://ubuntuone.com/2l6W8HhAEcw5DTcuLxP2wn

presentation-part3-soundscapes.mpeg
http://ubuntuone.com/6UXsfV59e7AnvOtAJjWKAO

presentation-part4-improvisation2-ending.mpeg (uploading)
http://ubuntuone.com/55te5BtDx7Fb9DdkPlezLV

Dont know if they are uploaded right, i should put them on Vimeo. I would like to have my partners screens, but he had a problem with his lap.
Vilson, where is the code u used to play with? all the best and cheers,

Renato
Renato Fabbri

02/12/11 para listamacambira, ChucK

> I like how you make a glorious mess instead of the stark minimalism of
> the other livecoding I've seen. I'm not sure how this would scale, but
> the difference is exciting.

Thanks! I like that also. The idea is to use the desktop to play and make it
more appealing. That bouncing white ball is 'processing'. The cow is 'cowsay'.
Some years ago i did what i now call LDP (Linux Desktop Playing) with jack-rack,
ardour, audacity, PD, chuck, python and even audacious. That was a
really big mess,
specially with ABT:

http://trac.assembla.com/audioexperiments/browser/ABeatDetector

Maybe what we are doing is live coding with heritances from LDP.

Anyway, these are the 5 small videos at Vimeo, so anyone can take a look:
- live coding presentation, part 1 a
basic principles of the live coding presentation we did on 20/11/2011
for about 3,5 thousand people on Festival CONTATO, São Carlos, Brazil.
http://vimeo.com/33012735
- live coding presentation part1 b: REM and cows
about Rapid Eyes Movement (REM) and use of cows in the live coding
presentation we did on 20/11/2011 for about 3,5 thousand people on
Festival CONTATO, São Carlos, Brazil.
http://vimeo.com/33018740
- live coding presentation part2 improvisation
improvisation part of the live coding presentation we did on
20/11/2011 for about 3,5 thousand people on Festival CONTATO, São
Carlos, Brazil.
http://vimeo.com/33019291
- presentation part3 soundscapes
The part where we used soundscapes in the live coding presentation we
did on 20/11/2011 for about 3,5 thousand people on Festival CONTATO,
São Carlos, Brazil.
http://vimeo.com/33025717
- presentation part4 improvisation2 ending
endind of the live coding presentation we did on 20/11/2011 for about
3,5 thousand people on Festival CONTATO, São Carlos, Brazil.
http://vimeo.com/33025913
cheers,
rfabbri
Vilson Vieira
02/12/11
para Renato, ChucK, listamacambira
Hey Kassen and other Chuckists!
I think it is interesting to note we used an alternative approach considering the sync between Renato and me. The sound was generated by Renato using ChucK/Vim/Jack and by me using ChucK/Emacs/Jack without sync. The audio from both of us was passed to a Pd patch running on a third computer operated by Gilson Beck, another composer, part of the trio (FooBarBaz). Gilson spatialized and mixed the audio generated by us with a visual interface: the movements of his hands were tracked by a "color tracker" implemented by Ricardo Fabbri on Pd/GEM and the x/y coordinates defined the panning effects. On this way we could mix both audio in certain times, creating a dialogue between my sound, Renato's sound and Gilson's.
Unfortunatelly I lost my laptop and all the codes within after the presentation, but I used a screen similar to Renato's recorded screencasts, using ChucK as a live sampler, similar to Thor's ixilang approach. A snippet of the code was saved here: https://gist.github.com/1379142
I think Gilson can send you more details about his Pd patch and some videos about the human body interface tracked by colors.
All the best.
foo.ck:
// manipula esse
["samples/fx/s20.wav"] @=> Foo.name;
[0.] @=> Foo.prop;
[.25, .15] @=> Foo.rate;
[2., 1., 1., 4.] @=> Foo.du;
[.8] @=> Foo.gain;
foosp.ck:
// executa esse primeiro que o foo.ck. e antes de tudo o tg.ck
public class Foo {
static string name[];
static float prop[];
static float rate[];
static float du[];
static float gain[];
}
["samples/fx/s22.wav"] @=> Foo.name;
[.0] @=> Foo.prop;
[1.] @=> Foo.rate;
[4.] @=> Foo.du;
[0.] @=> Foo.gain;
TimeGrid tg;
tg.set(1::minute/60/2, 8, 10);
tg.sync();
SndBuf buf => JCRev j => dac;
.5 => j.gain;
.2 => j.mix;
0 => int i;
while (true) {
Foo.name[0] => buf.read;
Math.trunc(buf.samples()*Foo.prop[i%Foo.prop.size()]) $ int => buf.pos;
Foo.gain[i%Foo.gain.size()] => j.gain;
Foo.rate[i%Foo.rate.size()] => buf.rate;
tg.beat*Foo.du[i%Foo.du.size()] => now;
i++;
}
tg.ck
//basic timing operations abbreviated
public class TimeGrid {
dur beat;
dur meas;
dur sect;
int nbeat;
int nmeas;
//phase and magnitude of offset
float measPhase;
dur measOffset;
fun void set(dur mybeat, int nb, int nm) {
mybeat => beat;
nb => nbeat;
beat*nbeat => meas;
nm => nmeas;
meas*nmeas => sect;
}
//sync to beat
fun void sync() {
beat - (now % beat) => now;
}
fun void sync(dur T) {
T - (now % T) => now;
}
//how long to sync to this duration
fun dur syncDur(dur T) {
return (T - (now % T));
}
//minimum time
fun dur tmin(dur a, dur b) {
return (a < b) ? a : b;
}
//get beat in relation to section
fun int guess() {
//this approach would not count sections
//return ((now % sect) / beat) $ int;
//this approach is completely global
return (now / beat) $ int;
}
//get the mod rhythm
fun int bmod(int r) {
return (r%nbeat);
}
fun int mmod(int r) {
return (r/nbeat%nmeas);
}
fun int smod(int r) {
return (r/nbeat/nmeas);
}
//section markers
int g;
int b;
int m;
int s;
int i;
int j; //for anything, really
int c; //counter in measure
int d; //counter in section
//events for stuff
Event newMeas;
Event newSect;

//update markers
fun int up() {
guess() => g;
//experimental
if ( b-bmod(g)>0 ) { //if b decreases
0=>c;
newMeas.broadcast();
}
else c++;
//TODO: make a c but for the measure
if ( m-mmod(g)>0 ) { //if m decreases
0 => d;
newSect.broadcast();
}
else d++;

bmod(g) => b;
mmod(g) => m;
smod(g) => s;
i++;
return true;
}
//update the markers of another timeGrid
fun int up( TimeGrid tg ) {
this.up();
b => tg.b;
m => tg.m;
s => tg.s;
g => tg.g;
c => tg.c;
i => tg.i;
j => tg.j;
return true;
}
//pause: make shred wait until input low
//ill-concieved, really!, because it can't monitor a changing input
/*
fun void pause( int a ) {
while ( a ) {
beat=>now;
sync();
}
}
*/

}

FooBarBaz - Histórico de revisão

VilsonVieira em 19h02min de 5 de junho de 2012

Rfabbri: /* Códigos */

VilsonVieira em 18h44min de 5 de junho de 2012

VilsonVieira: Nova página: FooBarBaz é experimento em livecoding. Apresentado no Festival Contato 2011. Mais sobre Livecoding. == Códigos == Para os códigos usados no projeto, veja AudioArt. == V...