[Openal] Implementing a Mac-based system

[Raymond Balogh]

Hi Matt,

1. Yes, but I don`t think it will help in your case. Optical and Coaxial  
SPDIF outputs (like the one you mentioned handle multichannel sound only  
in encoded form (Dolby Digital or DTS and their variants). That means  
there is an encoded bitstream sent through the output and it can be  
anything from 1.0 mono to 7.1 surround based on what encoding has been  
used. If the source is not encoded you will only get stereo signal using  
the mentioned SPDIF connection.

2. The S750 does not have digital inputs. You would need an external  
device to convert digital signal to analog and feed that to the speaker  
system.

3. I don`t know :-)


Regards,
Ray

On Thu, 10 May 2007 22:27:54 +0100, Matthew Tata <matthew.tata at uleth.ca>  
wrote:

> Hi,
>
> I use OpenAL in conjunction with a Creative soundcards and speakers
> to do auditory research.  We're transitioning our entire lab (slowly)
> to Apple computers and I need some advice on the hardware setup.
> Most of what we do requires using Powerbooks and Macbook Pros, which
> have optical digital audio out.  Last I heard these only supported 5.1.
>
> 1.  Does the digital output from a Macbook Pro handle 7.1 speakers?
> 2. Do I need an entirely new system with a digital tuner and
> speakers, or is there a way to use my existing Creative S750 speakers?
> 3.  What is the approximate latency between when my code calls for a
> source to play and when the sound actually plays with such a system?
> I need it to be reliably +/- 2 ms or less.
>
> I greatly appreciate all the help I've gotten from this forum.
> Thanks yet again.
>
> Regards,
>
> Matt
>
> --
> Matthew Tata, Ph.D.
> Assistant Professor
> The University of Lethbridge
> 4401 University Drive
> Lethbridge, AB T1J 3M4
> ph. (403) 394-3994
> fax (403) 329-2775
>
> matthew.tata at uleth.ca
>
>
>



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