Hello to all.

I would like to distribute eight channels the sound of a stereo file.

Does anyone have any idea on:
/- How to divide and distribute the stereo material (in space octophonic);
- Some opcodes to be used for the ottofonia;
- Opcode which can be used for the movement of the sound (in ottofonia)
/
Thanks for any idea,
Enrico



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on 2013-08-28 at 23:29 Enrico Francioni wrote:

> I would like to distribute eight channels the sound of a stereo file.
> 
> Does anyone have any idea on:
> /- How to divide and distribute the stereo material (in space
> octophonic);
> - Some opcodes to be used for the ottofonia;
> - Opcode which can be used for the movement of the sound (in ottofonia)
> /


i find that spat3d gives very good results, both for angle and distance.
it's based on a physical model, meaning that if you move the sources fast
you'll get a natural sounding doppler effect. it also simulates the room
acoustics. the reverb is good, although a bit tricky to set the parameters
right. but if you only want the opcode for localization, you'll want to
use it in "free field" mode. 

the output of spat3d is in ambisonics format and you'll have to decode
later, but decoding for a regular octagon is easy. ambisonics is not very
good at giving a precise localization of the sound sources. but OTOH it
provides a very smooth and continuous space, in my opinion better in many
ways to other techniques. and an important advantage of ambisonics is that
you can decode for different speaker arrays. so maybe spat3d will be
better suited for your needs than opcodes with more precise and defined
localization, like vbap. 

but if all you have is the stereo mix, perhaps a different approach could
work better. you could try exploring some of the pseudo-stereo techniques
explained by andrés in an article in the csound journal some time ago:

http://www.csounds.com/journal/issue14/PseudoStereo.html

i don't know, i'm afraid i can't contribute much more than this...

Alternatives include vbap8 and friends and also roll-your-own using pan2,
but ambisonics has a good reputation
==John ff
>
> on 2013-08-28 at 23:29 Enrico Francioni wrote:
>
>> I would like to distribute eight channels the sound of a stereo file.
>>
>> Does anyone have any idea on:
>> /- How to divide and distribute the stereo material (in space
>> octophonic);
>> - Some opcodes to be used for the ottofonia;
>> - Opcode which can be used for the movement of the sound (in ottofonia)
>> /
>
>
> i find that spat3d gives very good results, both for angle and distance.
> it's based on a physical model, meaning that if you move the sources fast
> you'll get a natural sounding doppler effect. it also simulates the room
> acoustics. the reverb is good, although a bit tricky to set the parameters
> right. but if you only want the opcode for localization, you'll want to
> use it in "free field" mode.
>
> the output of spat3d is in ambisonics format and you'll have to decode
> later, but decoding for a regular octagon is easy. ambisonics is not very
> good at giving a precise localization of the sound sources. but OTOH it
> provides a very smooth and continuous space, in my opinion better in many
> ways to other techniques. and an important advantage of ambisonics is that
> you can decode for different speaker arrays. so maybe spat3d will be
> better suited for your needs than opcodes with more precise and defined
> localization, like vbap.
>
> but if all you have is the stereo mix, perhaps a different approach could
> work better. you could try exploring some of the pseudo-stereo techniques
> explained by andrés in an article in the csound journal some time ago:
>
> http://www.csounds.com/journal/issue14/PseudoStereo.html
>
> i don't know, i'm afraid i can't contribute much more than this...
>
>
>
>
> Send bugs reports to the Sourceforge bug trackers
> csound6:
>             https://sourceforge.net/p/csound/tickets/
> csound5:
>             https://sourceforge.net/p/csound/bugs/
> Discussions of bugs and features can be posted here
> To unsubscribe, send email sympa@lists.bath.ac.uk with body "unsubscribe
> csound"
>
>
>
>
>

Ciao Luis,

Just today I did some tests with /bformenc1/ and /bformdec1/ (ambisonico).
I split the stereo file into two mono files, and then I worked on the code.
The result is pretty good, but I'll have to make some more changes before
going to the Render to File.

The code /vbap8/ I had used in my other work for violin and sound support.
Instead the code /spat3d/ yet I never used, I find it rather complex.

Luis if you have other ideas these are well accepted.

Thanks, see you soon.
Enrico

***


luis jure wrote
> on 2013-08-28 at 23:29 Enrico Francioni wrote:
> 
>> I would like to distribute eight channels the sound of a stereo file.
>> 
>> Does anyone have any idea on:
>> /- How to divide and distribute the stereo material (in space
>> octophonic);
>> - Some opcodes to be used for the ottofonia;
>> - Opcode which can be used for the movement of the sound (in ottofonia)
>> /
> 
> 
> i find that spat3d gives very good results, both for angle and distance.
> it's based on a physical model, meaning that if you move the sources fast
> you'll get a natural sounding doppler effect. it also simulates the room
> acoustics. the reverb is good, although a bit tricky to set the parameters
> right. but if you only want the opcode for localization, you'll want to
> use it in "free field" mode. 
> 
> the output of spat3d is in ambisonics format and you'll have to decode
> later, but decoding for a regular octagon is easy. ambisonics is not very
> good at giving a precise localization of the sound sources. but OTOH it
> provides a very smooth and continuous space, in my opinion better in many
> ways to other techniques. and an important advantage of ambisonics is that
> you can decode for different speaker arrays. so maybe spat3d will be
> better suited for your needs than opcodes with more precise and defined
> localization, like vbap. 
> 
> but if all you have is the stereo mix, perhaps a different approach could
> work better. you could try exploring some of the pseudo-stereo techniques
> explained by andrés in an article in the csound journal some time ago:
> 
> http://www.csounds.com/journal/issue14/PseudoStereo.html
> 
> i don't know, i'm afraid i can't contribute much more than this...
> 
> 
> 
> 
> Send bugs reports to the Sourceforge bug trackers
> csound6:
>             https://sourceforge.net/p/csound/tickets/
> csound5:
>             https://sourceforge.net/p/csound/bugs/
> Discussions of bugs and features can be posted here
> To unsubscribe, send email 

> sympa@.ac

>  with body "unsubscribe csound"





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I want also to thread the link:

http://csound.1045644.n5.nabble.com/eight-channels-td4412966.html

;-)
e



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