Hi all,

I've uploaded a new sampled sound granulation patch to my website at:
http://www.VideoGameAudio.com/
under the 'patches' section:
http://videogameaudio.com/main.htm#patches

It granulates a loaded sample and allows the grains to be distributed in 5.1 surround. It should be fairly easy for you to use the surround or granulation code in your own work. Let me know if it is useful to you and perhaps give credit when appropriate.

I presented it as part of a demonstration at the GameSoundCon in San Francisco in November 2009 and had several people ask for the code, so here it is.

Cheers,
Leonard J. Paul / VideoGameAudio.com

great!
one of the best granulizer i've ever tried.
with a third choise for a live input it'll be terrific.
cheers

Very nice patch! The granulaizer is amazing.
I was wondering in 5.1 about the panning of the centre channel : I didn't see if it is possible to restrict the centre pan to the C output. Currently when centered front the signal goes at same level to L C R. Perception wise that is correct, but for the levels it does make a difference if the C is not at the same time at equal power to L and R. Of course I'm only trying out with mono and stereo files without any concept as to what should be localized where.
Is there a control that allows to control how much the centre 'bleeds' into L and R? Or a way to restrict the signal to the C channel once it is panned there?

Jurgen

Hi I see that

downmix in [_surroundRouting] may have misconceptions,
(I don't see entire code yet, so I could be wrong)

according ITU-BR:

L = 1L+0.71Ls+0.71C
R = 1L+0.71Rs+0.71C

here i send a external that is part of my research (and therefore may have bugs)

--HELP--
#N canvas 0 22 581 337 10;
#X text 188 145 creation: [downmix~] or [downmix~ arg];
#X text 250 162 arg is normalization ratio;
#X text 250 178 by default 1;
#X obj 49 55 adc~ 1 2 3 4 5;
#X obj 48 210 dac~;
#X text 189 14 DownMix for 5.1 surround to Stereo 2;
#X obj 48 130 downmix_5.1~;
#X text 193 247 Acorrding ITU-R-BS 1116-1;
#X text 193 263 METHODS FOR THE SUBJECTIVE ASSESSMENT OF SMALL IMPAIRMENTS
IN AUDIO SYSTEMS INCLUDING MULTICHANNEL SOUND SYSTEMS;
#X text 186 38 1-L;
#X text 186 53 2-R;
#X text 186 69 3-Ls;
#X text 187 84 4-Rs;
#X text 187 98 5-C;
#X text 187 112 6-LFE;
#X text 19 305 Guilherme M. Lunhani;
#X text 157 305 gcravista@gmail.com;
#X connect 3 0 6 0;
#X connect 3 1 6 1;
#X connect 3 2 6 2;
#X connect 3 3 6 3;
#X connect 3 4 6 4;
#X connect 6 0 4 0;
#X connect 6 1 4 1;

--External--

#N canvas 110 320 757 405 10;
#X obj 71 125 inlet~ L;
#X obj 131 125 inlet~ R;
#X obj 189 125 inlet~ Ls;
#X obj 254 125 inlet~ Rs;
#X obj 318 125 inlet~ C;
#X obj 71 351 outlet~;
#X obj 343 344 outlet~;
#X text 70 62 Downmix: L = 1L+0.71C+0.71Ls;
#X text 124 78 R = 1R+0.71C+0.71Rs;
#X text 51 262 L;
#X obj 384 125 inlet;
#X obj 495 125 loadbang;
#X obj 495 147 \$0;
#X obj 71 260 expr~ ($v1+(0.71*$v2)+(0.71*$v3))/($f4*2.42);
#X obj 343 261 expr~ ($v1+(0.71*$v2)+(0.71*$v3))/($f4*2.42);
#X obj 495 172 expr if($f1==0 \, 1 \, $f1);
#X obj 564 152 bng 15 250 50 0 empty empty empty 17 7 0 10 -262144
-1 -1;
#X connect 0 0 13 0;
#X connect 1 0 14 0;
#X connect 2 0 13 1;
#X connect 3 0 14 1;
#X connect 4 0 13 2;
#X connect 4 0 14 2;
#X connect 10 0 13 3;
#X connect 10 0 14 3;
#X connect 11 0 12 0;
#X connect 12 0 15 0;
#X connect 13 0 5 0;
#X connect 14 0 6 0;
#X connect 15 0 13 3;
#X connect 15 0 14 3;
#X connect 16 0 12 0;