[slim] Re: SB3/6.1.1 and DTS issues

2005-11-25 Thread smst

machinehead Wrote: 
 I did try one of my DTS CD's, ripped to FLAC, but can't get it working
 on my Squeezebox 1.  Not entirely sure why, there shouldn't be any
 bit-mangling, but I can't find any reference to DTS working on anything
 less than a SB2.
SB1 doesn't pass the bits through quite correctly -- I asked the other
day and was told, IIRC, that the sign of each 16-bit word is inverted
(or something along those lines).

In theory one could modify the underlying WAV to compensate for this...


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Re: [slim] Re: SB3/6.1.1 and DTS issues

2005-11-25 Thread machinehead

smst 
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 machinehead Wrote:
 I did try one of my DTS CD's, ripped to FLAC, but can't get it working
 on my Squeezebox 1.  Not entirely sure why, there shouldn't be any
 bit-mangling, but I can't find any reference to DTS working on anything
 less than a SB2.
 SB1 doesn't pass the bits through quite correctly -- I asked the other
 day and was told, IIRC, that the sign of each 16-bit word is inverted
 (or something along those lines).

 In theory one could modify the underlying WAV to compensate for this...

Now that you mention that, I think I remember reading that a looonng time 
ago.  Thanks, that would have driven me nuts.

Ed
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Re: [slim] Re: SB3/6.1.1 and DTS issues

2005-11-24 Thread machinehead

kkitts 
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 After setting the volume at full everyting worked perfectly. BTW, the

Glad to hear you got it working, BTW.  I did try one of my DTS CD's, ripped 
to FLAC, but can't get it working on my Squeezebox 1.  Not entirely sure 
why, there shouldn't be any bit-mangling, but I can't find any reference to 
DTS working on anything less than a SB2.

Ed



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[slim] Re: SB3/6.1.1 and DTS issues

2005-11-23 Thread giulianoz

http://bugs.slimdevices.com/show_bug.cgi?id=2152

hopefully the passthrough will be in a future release :)
as for the sb2 instead of sb3 message it's only a string passed by the
server. if you update the server it will turn to squeezebox 

bye

giuliano


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[slim] Re: SB3/6.1.1 and DTS issues

2005-11-23 Thread kkitts

After setting the volume at full everyting worked perfectly. BTW, the
only connection from my SB3 to my receiver is the optical/dgital cable.
If I have volume set at full on the SB3 will the sound quality degrade.
I'm not an audiophile - but I think we've all noticed that when you
crank the volume on source devices that use plain 'ol RCA jacks that
you can sometimes get some distortion in the signal. Not sure if that
same principal holds for optical/digital or not.

As far as I could tell things sounded great...


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Re: [slim] Re: SB3/6.1.1 and DTS issues

2005-11-23 Thread Ed

kkitts 
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wrote in message news:[EMAIL PROTECTED]

 After setting the volume at full everyting worked perfectly. BTW, the
 only connection from my SB3 to my receiver is the optical/dgital cable.
 If I have volume set at full on the SB3 will the sound quality degrade.
 I'm not an audiophile - but I think we've all noticed that when you
 crank the volume on source devices that use plain 'ol RCA jacks that
 you can sometimes get some distortion in the signal. Not sure if that
 same principal holds for optical/digital or not.

My understanding is that in this case, full volume on the Squeezebox will 
give you the best (100%) quality, and that seems to be confirmed by your 
results.  Full volume passes the exact bits that are stored on the disk, 
whereas anything less is changing the volume _digitally_, and therefore 
changing the bits.  It's a different animal than an analog volume control.

Ed



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Re: [slim] Re: SB3/6.1.1 and DTS issues

2005-11-23 Thread Aaron Zinck

 If I have volume set at full on the SB3 will the sound quality degrade.
 I'm not an audiophile - but I think we've all noticed that when you
 crank the volume on source devices that use plain 'ol RCA jacks that
 you can sometimes get some distortion in the signal. Not sure if that
 same principal holds for optical/digital or not.

The principal does *not* hold.  In fact, to the contrary, you will get the
*best* sound quality from a digital connection like this when the source is
at full volume.  This is because with a digital signal there is a discrete
amount of dynamic resolution, and when you lower the volume you also lower
the amount of resolution.  So quiet passages can be lost entirely, and other
elements can lose fidelity.  The reason analog audio can sound bad when
driven into inputs at high levels is because the voltages supplied can
literally overload the preamps and cause clipping.  This is not an issue
with digital audio as the digital signal voltages do not change based upon
the volume level of the digital signal (just ones and zeros).  The analog
preamp stages in a digital processor come after the digital decoding is done
and any DAC will be matched to its accompanying preamp and calibrated in
such a way as to not overdrive the preamp stage.



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