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View Full Version : HDMI pass trough of Dolby True HD/ DD 5.1 audio



Paladium
01-24-2011, 09:27 AM
Hi,

I'm struggling to get this to work. Any input would be appreciated to correct this problem :)
Setup:
- TV 46PFL9705 WK 36-2010, SW 140.27.
- HTS Yamaha YSP4100 SW 7.03. 1x HDMI-ARC, 4x HDMI 1,4 in.
- BD BDP8000 SW 1.53.
TV and HTS are connected trough HDMI-ARC connection.
When I connect the BD-player to the TV at HDMI 2 the 5.1 sound is not passed over to the HTS via the HDMI-ARC connection. The output to the HTS is stereo.
Connecting the BD-player directly to the HTS over HDMI will give me the selected 5.1 sound.

Is the TV not capable to pass trough 5.1 surround over HDMI?

Thanks,
Ben

Nettle
01-24-2011, 10:25 AM
Have you tried to connect the SPDIF cable for the HTS (coaxial)
and use the HDMI Arc for the BD?

regads

Paladium
01-24-2011, 10:47 AM
Have you tried to connect the SPDIF cable for the HTS (coaxial)
and use the HDMI Arc for the BD?

regads

Hi,
No have not tried this yet. Before buying yet another cable I would like to be sure if the passing trough off this audio modus is possible at all in this configuration or that I'm stuck with some mallfunctioning HDMI hardware/software in the TV.
Funny thing is that when watching TV the 5.1 sound is passed to the HTS without any problem.

Thanks for the help offered :)
Ben

Nettle
01-24-2011, 11:49 AM
The SPDIF cable is included in the standard configuration of the HTS normally (at least in the Philips HTS that I've purchased).

regards

Paladium
01-24-2011, 01:07 PM
To be honest: getting the HTS of the wall, disconnecting and reconnecting the cables, and putting the HTS back on the wall is kind of a pain in the ...:)

I'm suspecting the TV's HDMI connections for several reasons. When I turn of the TV the time it takes to turn of the HTS differs from directly to up about a minute. This applies for turning on the HTS as well. Often it even lets me hear the audio from a different TV channel as the one I was watching when I switched off the TV.

Resume:
- BD->HTS<->TV. When I turn on the TV the HTS is turned on too, but no sound. Have to go in to the easylink menu and turn on and of the easylink and ARC options to get the audio to go to the HTS.
- BD->TV<-> HTS. No 5.1 audio to HTS.

Toengel
01-24-2011, 09:36 PM
Hi,

my scenario:

BD-player connected with HDMI to TV (HDMI 1 ARC) - TV is connected with digital coaxial SPDIF to my HTS (Sony receiver).

DTS is NOT routed through the TV to my HTS! I didn't check Dolby Digital... I have connected my BD-player directly with my HTS via optical digital SPDIF - that works.

Don't know, if this is a feature or bug...

Toengel@Alex

Paladium
01-27-2011, 10:23 AM
The main question is still unanswered : are the TV's HDMI connections 2-4 supposed to pass trough any surround audio over the HDMI 1 connection to another device (HTS, AV receiver)?

petasis
02-03-2011, 04:04 PM
Hi,

my scenario:

BD-player connected with HDMI to TV (HDMI 1 ARC) - TV is connected with digital coaxial SPDIF to my HTS (Sony receiver).

DTS is NOT routed through the TV to my HTS! I didn't check Dolby Digital... I have connected my BD-player directly with my HTS via optical digital SPDIF - that works.

Don't know, if this is a feature or bug...

Toengel@Alex

Have you seen this? http://www.supportforum.philips.com/showthread.php?623-DTS-pass-through

I complain about silently dropping DTS pass-through since September 2010. Its a shame my 9731 does pass-through DTS from HDMI -> SPDIF, and my 9705 does not...

DD is passed-through correctly from HDMI -> SPDIF...

Paladium
02-07-2011, 09:19 AM
OK.I checked it and video from BD->TV over HDMI and sound from BD-> HTS over S/PDIF coax works. In this setup I have to say goodbey to the wonderfull and comfortable world of HDMI however, I have to operate yet another remote control to select the inputsource for the HTS.

Udi
08-15-2011, 05:27 PM
OK.I checked it and video from BD->TV over HDMI and sound from BD-> HTS over S/PDIF coax works. In this setup I have to say goodbey to the wonderfull and comfortable world of HDMI however, I have to operate yet another remote control to select the inputsource for the HTS.


Hi Paladium!

I want you to test one last thing with the ARC connection.

go to TV sound setting and set SURROUND --> ON (THE DEFAULT IS OFF)

maybe that way the ARC pass-through will work and not be cut to Stereo only.

I also plan to buy an HTS and configure it with ARC. i have a 52pfl8605 TV

please try this and tell me if that provides 5.1 through ARC.

Udi
08-15-2011, 07:34 PM
I have a 52pfl8605 TV

Lets say i have an HTS (with HDMI ARC) connected to the TV via HDMI 1 (arc 1.4).
and also have an XBOX connected via HDMI to the TV's HDMI 2. (1.3 not arc)

i play my XBOX game.

Will i hear the sound of the game on my HTS???

Will the sound from my XBOX will go to the TV's HDMI 2 and then BACK to the HTS connected via the HDMI ARC?

Will the Sound be 5.1 if the game supports it???????

WE WANT A PHILIPS OFFICIAL TO ANSWER THAT QUESTION ONCE AND FOR ALL!

ARC SHOULD PASS THROUGH 5.1 AND IF NOT ITS A BUG AND SHOULD BE FIXED.

Udi
08-15-2011, 07:51 PM
Taken from WWW.HDMI.ORG ----> FAQ
http://www.hdmi.org/manufacturer/hdmi_1_4/hdmi_1_4_faq.aspx#14

Which audio formats are supported over the Audio Return Channel?

The Audio Return Channel supports all the same audio formats that can be sent through a traditional S/PDIF audio connection, including Dolby Digital, DTS, and PCM audio.

Paladium
08-15-2011, 09:18 PM
Hi Udi,

I'm sorry to dissapoint you. The stereo/surround option only controls the TV's internal speakers.
Furthermore I don't think the ARC channel itself is to blame. Philips just hasn't put this functionality in place. Maybe to cut some costs on lincense fees. Cable TV's multi-channel audio is passed trough just fine.
All in all this is very dissapointing. Maybe an official statement from Philips regarding this issue could stop us speculating about the cause.

Cheers,
Ben

Toengel
08-16-2011, 06:58 AM
Hi,

a complete passthrough chain with HDMI (BDP->HDMI->TV->HDMI-ARC->Receiver) should work, since in this setup the complete encryption chain is preserved. If you connect your TV only with SPDIF to the Receiver this could be a problem...

Toengel@Alex

Paladium
08-16-2011, 08:00 AM
Hi,

a complete passthrough chain with HDMI (BDP->HDMI->TV->HDMI-ARC->Receiver) should work, since in this setup the complete encryption chain is preserved. If you connect your TV only with SPDIF to the Receiver this could be a problem...

Toengel@Alex

Theoreticly: yes!
Is there anyone out there with this configuration (all Philips devices or a mix of brands) who can confirm multi-channel sound is passed trough?

Udi
08-16-2011, 12:16 PM
Theoreticly: yes!
Is there anyone out there with this configuration (all Philips devices or a mix of brands) who can confirm multi-channel sound is passed trough?

Hmm, i just bought a Panasonic HTS sc-pt580 with HDMI ARC.

I should get it in a few days.

The problem is that this Panasonic has only toslink optical input, so if the ARC won't work i will be fu**** really hard :)

Paladium
09-07-2011, 09:40 AM
Does anybody know if there's an official statement from Philips regarding cause and solution of this problem?

Is there any statement about other HDMI related problems?

a_Tom
09-07-2011, 10:21 AM
Sorry to disappoint you but there is neither a "Problem" or a "Solution".
If you have an external Device connected to the TV the connected Device will look up what the TV can and does not can.
In this Case, as the TV does not have a build in DTS Encoder, the for instance a Blu Ray Player will detect the Missing DTS encoder and will Downmix the Audio to fit the TV specifications, means, Stereo.

Also

even if you got a Device with Build in DTS Decoder, this one should also downmix the Audio and do not give it forward untouched, because of the Copyright Protection within HDMI.
Only certified A/V Receivers will have the capability to split the Audio and Videosignal, so they can give out Audio as youd expect and forward the Video untouched.
But this goes only for certefied Devices.

So the only "Solution" in this Case is an certified A/V Receiver.

Paladium
09-07-2011, 11:02 AM
@ a-tom: I don't agree, and/or I don't fully understand.
Let's see :
- DVB-C > CI+ > TV > HDMI1 (ARC) > YSP4100 (ARC) passes through DD and DTS according to input-indicator on YSP.
- BDP8000 > YSP4100 (HDMI in) passes over DD and DTS.
- BDP8000 > TV (HDMI in) > YSP4100 (HDMI ARC) does not pass through DD or DTS.
Surely you agree the above indicates the problem is within the TV.

a_Tom
09-07-2011, 11:22 AM
o_O


- DVB-C > CI+ > TV > HDMI1 (ARC) > YSP4100 (ARC) passes through DD and DTS according to input-indicator on YSP.

okay
again
you can have DTS or DD untouched on a HTS or whatever via HDMi ARC from the TV IF:
the sound comes from an internal TV Source like the DVB-C/T/S Tuner or as also available on some TVs from internal Blu Ray Players or DVD Players.
BUT!
if you have an external Player like the BDP8000 this doesnt work.
in this special case because the BDP8000 detects that the TV does not have a DTS Decoder and downmixes the Sound.



- BDP8000 > YSP4100 (HDMI in) passes over DD and DTS.


sure it does because the YSP is build to play the Soundand you dont have some other Device in the middle



BDP8000 > TV (HDMI in) > YSP4100 (HDMI ARC) does not pass through DD or DTS

yes, like i wrote above, the BDP detects that the TV (first connected Device in Line) does not have a DTS decoder, to fit the TV specifications, the BDP will downmix.

NOTE
even if you have a TV which has a DTS Decoder inside, this TV will have to downmix the Sound also as this is forced by the HDMI conent Protection System build into HDMI.

Paladium
09-07-2011, 01:35 PM
@ a_Tom : Appreciate your input and thanks for that, but this is getting far to technical for me. I guess you are right about the ins and outs of this technology.

Still an official statement from Philips would be more than welcome :)

P.s. Am I correct when assuming that over here ( http://www.supportforum.philips.com/en/showthread.php?623-DTS-pass-through , post #2 ) Philips states Dolby Digital is passed through over HDMI while DTS is no longer supported in the 2010 9705 series.