On May 27, 09 18:44:41 -0400, Alex Deucher wrote:
On Tue, May 26, 2009 at 4:29 PM, Christian König
So my questions: Is the RV630 capable of doing high definition audio at all? The specs from ATI are not 100% clear about that.
Have anybody of your guys ever got stuff like this working? Maybe with the windows driver?
I don't think there is enough bandwidth for > 2 channel PCM. IIRC, the HDMI spec only allows 2 channel PCM.
Actually, it allows much more: from wikipedia:
HDMI supports up to 8 channels of audio at sample sizes of 16-bit,
20-bit, and 24-bit with sample rates of 32 kHz, 44.1 kHz, 48 kHz, 88.2
kHz, 96 kHz, 176.4 kHz, and 192 kHz. HDMI also supports any
IEC61937-compliant compressed audio stream such as Dolby Digital and
DTS and up to 8 channels of one-bit DSD audio, which is used on Super
Audio CDs, at rates up to 4 times that of Super Audio CD. With version
1.3, HDMI supports lossless compressed audio streams Dolby TrueHD and
DTS-HD Master Audio.
So even HDMI 1.2 supported more than 2 channels PCM.
I have no idea whatsoever whether the RV630 is capable of providing that
bitstream capacity.
CU
Matthias
--
Matthias Hopf