Philip Meyer;514899 Wrote: 
> I've never really understood why multi-channel ripped audio can't be
> ripped and played directly through Squeezeboxes.
> 
> More and more products are being released in DTS/DD5.1/DVD-A formats. 
> Why can't the audio be ripped to an ac3 file, and played through a
> squeezebox player without first wrapping the audio in a container file
> format?
> 
> I have been using a utilitity that someone posted many years ago now
> called "spdifconvert.py" to do this.  Is this a standard process that
> other audio players use?  Are there any other tools to do this audio
> conversion?
> 
> I recently got a 4-channel 96/24 LPCM DVD-A album.  I can open this in
> Foobar and other desktop applications, and it plays back fine.  I've
> ripped the music from Foobar to flac, and the flac files report the
> correct properties:
> 
>       Sample Rate: 96000 Hz
>       Channels: 4
>       Bits Per Sample: 24
>       Bitrate 9216 kbps
>       Codec: PCM
> 
> I can play this back through PC, and it downmixes to 2 channels and
> sounds great.
> 
> I don't think that spdifconvert.py can process this audio content, so I
> can't stream the album from SBS to my surround sound amp.
> 
> (I should point out that 9Mbps would be too much for my Wifi network to
> stream anyway, but potentially I could stream from a Touch using TinySC
> to stream the audio from a USB stick?)

SPDIF has limited bandwidth which won't support multi-channel lossless
audio.  This is why HDMI come in to become the standard for Blu-ray. 
High definition audio sure is the next wave.  Most likely supported in
the next generation of media players.

However, squeezebox is able to support regular dvd ac3 or dts in 5.1
format.  These formats encode multi-channels in pcm stream which will be
handled by the player without problem.  Output through the SPDIF or
coaxial plug could go directly into home receiver and play as 5.1
format.  The only trick is that you have to make sure the volume is at
100%.


-- 
Honva
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