Blu-ray pure audio

Posted by: The Meerkat on 09 November 2013

Hi guys

 

Not sure if this post should be on here, or the Hi-Fi Corner forum. However, They are releasing more and more 'Blu-ray pure audio' titles. I already have my Sony Blu-ray player connected to my Supernait via an optical cable, and the sound it pretty good. However, I have to make sure the output from the Blu-ray player is in PCM stereo, otherwise the the Supernait does not like it at all!

 

Does anyone know if the new 'Blu-ray pure audio' discs will play the full 96/24bit Hi Res audio through Naim amps, or will I have to put it through my inferior AV amp and surround speakers?

 

Thanks 

Posted on: 11 November 2013 by tonym

Unfortunately, IIRC you won't be able to get HD audio from the SP/DIF output on your BluRay player. This will be downsampled to 16/48. HD audio's only obtainable through the HDMI connection, or via the player's analogue outputs.

 

You can buy devices that strip the HD audio from the HDMI signal but I'm not sure how good these are and they're pretty expensive.

Posted on: 11 November 2013 by m0omo0

Cue Aleg, he did that for SACD at the time, with his Oppo and a splitter.

Posted on: 11 November 2013 by Aleg

Hi Maurice

 

that worked .

 

i did indeed use a hdmi splitter which separated an spdif signal out of the hdmi signal.

 

it is not straight forward though.

because it comes from an hdmi signal, there has to be a handshake between splitter and source device where the splitter is telling the source device what resolutions it can handle. Only then will the source device send the best resolution to the splitter.

 

In my brand of splitter I could change the EDID chip which contains this information. I used an EPROM-programmer and an EDID editor to reprogram this EDID-chip so it would be able to accept 192kHz sample rate audio. Only then was the HDMI-splitter capable of sending out 192kHz audio over SPDIF.

 

it was a nice little study on how hdmi works and how to circumvent these protection mechanisms, but nowadays ripping SACD, or BluRay and playback from PC in highres is much easier.

 

 

If you want to use it in homeTheatre check out a product like this and ask if it would do what you want esp. With regard to audio sample frequencies

http://www.octavainc.com/HDMI-...er-EDID-Manager.html

it seems it enables you to modify the EDID from outside via a PC, which is much easier then in my time with the EPROM programmer.

 

and not at all expensive at US$ 160 or GB£127

 

 

 

cheers

 

aleg

Posted on: 11 November 2013 by m0omo0

Aleg, you're just a geek !