Eamonn Doyle

Has anyone out there done much with spatial control of granular synthesis? e.g. Controlling the 'spatial extent', 'spatial density' etc of GS sounds? (i.e. at a higher level than just grain pan position).

Also, there doesn't seem to be much mention of Auditory Scene Analysis regarding perception of GS sounds. Does anyone know of anything out there on conditions for perceptual fusion of grain streams etc?

Has anyone out there done much with spatial control of granular synthesis?  e.g. Controlling the 'spatial extent', 'spatial density' etc of GS sounds? (i.e. at a higher level than just grain pan position).

granular-synthesis-spatial-control

On 15-Feb-2007, at 13:26, Eamonn Doyle wrote:

> Has anyone out there done much with spatial control of granular 

> synthesis? e.g. Controlling the 'spatial extent', 'spatial 

> density' etc of GS sounds? (i.e. at a higher level than just grain 

FWIW: I've built GS patches that give much greater control over cloud 

diffusion than the common uniform distribution approach. I generally 

use beta distributions with controllable amounts of skew and variance.

I've also toyed with the idea of implementing a kind of 'grain 

spatialization coherence' by using distribution algorithms with 1/f^n 

I, too, would be interested to hear what others have found as useful 

Peter Castine +--> Litter Power & Litter Bundle for Jitter

Interface Building for |home | chez nous|

Max/MSP Extremely cool |bei uns | i nostri|

> Has anyone out there done much with spatial control of granular  
> synthesis?  e.g. Controlling the 'spatial extent', 'spatial  
> density' etc of GS sounds? (i.e. at a higher level than just grain  
> pan position).

FWIW: I've built GS patches that give much greater control over cloud  
diffusion than the common uniform distribution approach. I generally  
use beta distributions with controllable amounts of skew and variance.

I've also toyed with the idea of implementing a kind of 'grain  
spatialization coherence' by using distribution algorithms with 1/f^n  
(n>0) characteristics.

I, too, would be interested to hear what others have found as useful  
techniques.

--------------    http://www.bek.no/~pcastine/Litter/    -------------
Peter Castine             +--> Litter Power & Litter Bundle for Jitter
                                Universal Binaries on the way
iCE:  Sequencing,  Recording &
       Interface  Building  for                   |home    | chez nous|
       Max/MSP   Extremely cool                   |bei uns |  i nostri|
       http://www.dspaudio.com/                   http://www.castine.de

On Feb 15, 2007, at 7:26 AM, Eamonn Doyle wrote:

I've done 5 and 8 channel stuff with grains. Is this what you mean? 

I did an installation that actually controlled grain voicing via a 1- 

D celluar automata simulation. It was especially nice with the phase 

relationships used. Odd displacements between the channels.

> Also, there doesn't seem to be much mention of Auditory Scene 

> Analysis regarding perception of GS sounds. Does anyone know of 

> anything out there on conditions for perceptual fusion of grain 

MacKay, John. 1984. "On the Perception of Density and 

Textures: An Exploratory Study." Interface 13: 171-186.

Of course, MacKay is describing primarily orchestral textures. I 

would also point you to my dissertation which takes the "crawl before 

you walk" approach to perception and granular textures. But you are 

http://nathanwolek.com/nathanwolek/papers/wolek_PHDdiss.pdf

On Feb 15, 2007, at 7:26 AM, Eamonn Doyle wrote:
> Has anyone out there done much with spatial control of granular  
> synthesis?  e.g. Controlling the 'spatial extent', 'spatial  
> density' etc of GS sounds? (i.e. at a higher level than just grain  
> pan position).

I've done 5 and 8 channel stuff with grains.  Is this what you mean?   
I did an installation that actually controlled grain voicing via a 1- 
D celluar automata simulation.  It was especially nice with the phase  
relationships used.  Odd displacements between the channels.

> Also, there doesn't seem to be much mention of Auditory Scene  
> Analysis regarding perception of GS sounds. Does anyone know of  
> anything out there on conditions for perceptual fusion of grain  
> streams etc?

MacKay, John.  1984.  "On the Perception of Density and  
Stratification in Granular Sonic
Textures: An Exploratory Study."  Interface  13: 171-186.

Of course, MacKay is describing primarily orchestral textures.  I  
would also point you to my dissertation which takes the "crawl before  
you walk" approach to perception and granular textures.  But you are  
heading toward the big issue...
http://nathanwolek.com/nathanwolek/papers/wolek_PHDdiss.pdf

-------------------
Nathan Wolek, PhD --- nwolek@stetson.edu
Assistant Professor of Music Technology
Stetson University - DeLand, FL
http://www.nathanwolek.com


ambi.granulate~ does something similar, though it is somewhat beta 

and only offers Bartlett windows. Hook it up to an ambi.decode~ and 

you have scalable spatial grains. The distribution of all the grain 

parameters (including azimuth/elevation for spatialization) is linear 

http://www.maxobjects.com/?v=libraries&id_library=89

I doubt I'll develop this object further however, because I'm working 

on something much more flexible that would encompass this behaviour 

and much more; it should be ready in a couple of months.

On Feb 15, 2007, at 6:31 AM, Peter Castine wrote:

> On 15-Feb-2007, at 13:26, Eamonn Doyle wrote:

>> Has anyone out there done much with spatial control of granular 

>> synthesis? e.g. Controlling the 'spatial extent', 'spatial 

>> density' etc of GS sounds? (i.e. at a higher level than just grain 

> FWIW: I've built GS patches that give much greater control over 

> cloud diffusion than the common uniform distribution approach. I 

> generally use beta distributions with controllable amounts of skew 

> I've also toyed with the idea of implementing a kind of 'grain 

> spatialization coherence' by using distribution algorithms with 1/ 

> I, too, would be interested to hear what others have found as 

> Peter Castine +--> Litter Power & Litter Bundle for Jitter

> Interface Building for |home | chez nous|

> Max/MSP Extremely cool |bei uns | i nostri|

ambi.granulate~ does something similar, though it is somewhat beta  
and only offers Bartlett windows.  Hook it up to an ambi.decode~ and  
you have scalable spatial grains.  The distribution of all the grain  
parameters (including azimuth/elevation for spatialization) is linear  
with variable centre and width.

I doubt I'll develop this object further however, because I'm working  
on something much more flexible that would encompass this behaviour  
and much more; it should be ready in a couple of months.

> On 15-Feb-2007, at 13:26, Eamonn Doyle wrote:
>
>> Has anyone out there done much with spatial control of granular  
>> synthesis?  e.g. Controlling the 'spatial extent', 'spatial  
>> density' etc of GS sounds? (i.e. at a higher level than just grain  
>> pan position).
>
> FWIW: I've built GS patches that give much greater control over  
> cloud diffusion than the common uniform distribution approach. I  
> generally use beta distributions with controllable amounts of skew  
> and variance.
>
> I've also toyed with the idea of implementing a kind of 'grain  
> spatialization coherence' by using distribution algorithms with 1/ 
> f^n (n>0) characteristics.
>
> I, too, would be interested to hear what others have found as  
> useful techniques.
>
> -- P
>
> --------------    http://www.bek.no/~pcastine/Litter/    -------------
> Peter Castine             +--> Litter Power & Litter Bundle for Jitter
>                                Universal Binaries on the way
> iCE:  Sequencing,  Recording &
>       Interface  Building  for                   |home    | chez nous|
>       Max/MSP   Extremely cool                   |bei uns |  i nostri|
>       http://www.dspaudio.com/                   http://www.castine.de
>
>


Granular Synthesis Spatial Control...