DTS-MA passthrough

[Danielowenuk]

Hopefully a simple question....

Does the Raspberry pi have the necessary hardware to passthrough dts master audio?

Obviously not do the decoding work.

[dom]

Hardware: yes.
Software: no.

I've been hoping another customer would request it, but so far it's not been asked for.
I asked around and was quoted about a man-week to do the work (from the guy who did the standard DTS passthough).

Need to find out if RPF could justify paying him to do the work.

[goujam]

I've been looking around for this too. I could see the pi had hdmi v1.3 which meant the harwae should work but wondered what software would be required. I thought it may just be within in xbmc but it sounds like firmware is required.

[Danielowenuk]

Thanks Dom, nice to have an answer even if it's not quite the one I wanted

[thegr8brian]

I'd also love to have this support!

[jhend60]

I would also love to see this feature. It's probably the one thing stopping me using the Pi as a HD player.

[caravela]

having support for bluray in xbmc i think that would make sense to have DTS-MA passthrough support has well.

[barto28]

Yes if the foundation want to make Rpi a good Xbmc setup the DTS HD passthrough feature must be added.

This is the only thing that making me not using my Rpi as a htpc right.

Please add this

[milhouse]

I've been hoping another customer would request it, but so far it's not been asked for.
I asked around and was quoted about a man-week to do the work (from the guy who did the standard DTS passthough).

Need to find out if RPF could justify paying him to do the work.

If the Foundation is able to sell the licence for DTS, it would be a huge pitty for someone not to do the 5 days work required to also enable DTS-HD MA as well, thus making the Raspberry Pi the ultimate low-price media center device. If necessary, charge for DTS-HD MA under a different licence, or better yet bundle it with the standard DTS licence for a few extra pennies in order to recover the additional costs.

[goujam]

I would pay towards a fee for it !

[rbej]

I would pay towards a fee for it !

+1

[DJBnJack]

Me 2!

[winterpigz]

I'd also love to have this support!

+1

[chrispu2010]

This is all that is holding this card back from being my new media center. GOt my pi today and this was one of the first features I tested... sadly disappointed but I am hold out hope that it will get fixed soon.

[milhouse]

And the Star Wars Blu-Ray uses DTS-ES (6.1 channels) which should downmix to 5.1 DTS...

[Bogg]

I would pay towards a fee for it !

+1

[Mangoat]

I agree that this is a feature that the Pi should support (along with TrueHD) if the hardware supports it.

If a small payment is required akin to the Mpeg2 & VC-1 decoder licences, then that's perfectly acceptable IMO.

[r0nnie]

I would pay towards a fee for it !

+1

i believe this has been sorted now dom posted this in another thread.

Took some finding, but I've found a suspicious vector instruction in the downmixing code on GPU.
I believe my examples sound better now. You need the latest start.elf from guthub:
https://github.com/raspberrypi/firmware ... /start.elf

or use rpi-update if your distribution allows it.

i just removed my start.elf and added the one from the link to my /boot/ folder and it works like a charm

edit

rereading the thread im not even sure what dts pass through is lol
but i had probs with dts with low audio for voices but the audio for music was really loud and that fixed it for me

[goujam]

I would pay towards a fee for it !

+1

i believe this has been sorted now dom posted this in another thread.

Took some finding, but I've found a suspicious vector instruction in the downmixing code on GPU.
I believe my examples sound better now. You need the latest start.elf from guthub:
https://github.com/raspberrypi/firmware ... /start.elf

or use rpi-update if your distribution allows it.

i just removed my start.elf and added the one from the link to my /boot/ folder and it works like a charm

edit

rereading the thread im not even sure what dts pass through is lol
but i had probs with dts with low audio for voices but the audio for music was really loud and that fixed it for me

I think Dom was looking at downmixing 5.1 to 2.0 !

What we are talking about is hd audio which is lossless audio available on blu ray films ! What we want to do is have the pi pass the audio to an Av receiver which will handle the audio. This is currently available for ac3 and dts which are compressed audio formats but for lossless audio (truehd and dts_ma) its not available but hopefully will be soon !

[r0nnie]

What we are talking about is hd audio which is lossless audio available on blu ray films ! What we want to do is have the pi pass the audio to an Av receiver which will handle the audio. This is currently available for ac3 and dts which are compressed audio formats but for lossless audio (truehd and dts_ma) its not available but hopefully will be soon !

ah my mistake this is what happens when you dont know what you're on about lol

thanks for filling me in

[Danielowenuk]

Any more updates on this?

[sumolx]

I too would also like to see TrueHD and DTS-MA supported. If it requires a license for each or both, just like MPG2 and VC1 for such a small fee, I would gladly pay for it.

[andsoitgoes]

I don't get why passthrough is an issue? It shouldn't require any licensing, just passing all audio through for receivers to decode it, I don't want my Pi doing the work anyway, if I have the option not to.

[larzman]

+1

I too would also like to see TrueHD and DTS-MA supported. If it requires a license for each or both, just like MPG2 and VC1 for such a small fee, I would gladly pay for it.

[Danielowenuk]

How can we get this moving?

More +1s?

Donations to foundation?

Clearly lots of us would like this, but it's been a fair while since I first raised it now, and we don't seem to much further forward.