[mythtv-users] AC3 passthrough not working

[Allen Edwards]

On Sat, Apr 11, 2009 at 7:10 PM, Richard Shaw <hobbes1069 at gmail.com> wrote:

> On Sat, Apr 11, 2009 at 8:53 PM, Nick Morrott <knowledgejunkie at gmail.com>
> wrote:
> > On 12/04/2009, Richard Shaw <hobbes1069 at gmail.com> wrote:
> >> On Sat, Apr 11, 2009 at 8:31 PM, Allen Edwards
> >> > Why on earth would you want to resample.  The goal should bit true
> digital
> >>  > output.  Pass the bits to the receiver and let it do a DAC.  For best
> >>  > quality, don't decode, encode, decode just decode.
> >>  > Allen
> >>
> >>
> >> He may not have a choice. Some sound cards will not output anything
> >>  other than 48kHz. My nForce3 based MB didn't seem to want to but then
> >>  again, I haven't tried now that I've gone to an AMD chipset MB.
> >
> > And similarly, some S/PDIF inputs require 48kHz PCM input. This is why
> > you'll see messages stating that digital TV recordings work (48kHz)
> > but CDs ripped to MP3 (44kHz) do not.
> >
> > Nick
>
> Interestingly enough, I just did a simple test on my desktop, i.e.
> "aplay -D spdif Shutdown1.wav" or something like that. I just picked a
> file out of /usr/share/sounds and it worked! aplay showed it was a
> 44.1kHz file. I tried /usr/share/sounds/alsa first but those we
> already 48kHz. Now I just need to see if my Home Theater receiver
> minds 44.1kHz PCM audio.
>
> Richard
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A home theater receiver that won't play CDs?  What are the chances?  Think
about it.

Allen
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