On Wed, 19 Jul 2006 20:06:23 -0700
obstreperousness wrote:

> 
> nickrout Wrote: 
> > On Thu, 20 Jul 2006 14:12:56 +1200
> > Nick Rout wrote:
> > 
> > But DVD sound is  not in mp3 format, which may mean that there has to
> > be
> > a conversion to an appropriate format before streaming, which will
> > give
> > a further delay, on top of that inherent in a network setup. Also you
> > will want some caching for those inevitable network glitches and that
> > gves more delay.
> DVD playback software sends a PCM stream to the operating system sound
> driver, regardless of the audio format contained on the disc - the DVD
> playback software itself is responsible for decoding the
> DTS/AC3/MLP/&c.. 
> DVD playback was simply an example I chose. For my purposes, the source
> could be anything - any audio-producing application. They all send PCM
> data to the sound card driver. Sound Forge, QuickTime, PowerDVD,
> Windows Media Player, foobar2000, you-name-it.


Yes i appreciate that, I was suggesting that you stream the sound
separately to the video - sound to the sb via a stream and video to your
screen. 


> 
> Think of it this way: I want to use the SB3 as my sound card.

Can someone clarify for me - what formats are transmitted across the
wire to the streambox? Is there any conversion on the server, or does
the streambox do all conversion from the myriad formats it supports? I
had a feeling that everything was converted to mp3 on the server and
streamed to the SB as mp3, but I may be way wrong or out of date.

It would be possible to write a driver that takes the pcm output from
the average sound app and converts it to what the SB wants and then
streams it. NAS (Network Audio System) does a similar thing
http://radscan.com/nas.html . I sometimes use NAS to get sound around my
house over the LAN.

Unfortunately your choice of operating system may prevent you from doing
anything along those lines.

I think that any such system is going to have inherent network and
conversion delay problems. It'll make video unwatchable, but may be ok
for pure audio. However if you have pure audio, why not just use the SB
as it was intended?


> 
> Thanks for the research, Nick!
> 
> 
> -- 
> obstreperousness
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-- 
Nick Rout <[EMAIL PROTECTED]>

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