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Old 6th November 2011, 10:25 AM   #1
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Default Dolby digital to PCM converter

I have this problem:

My TV has a OPTICAL DIGITAL OUTPUT that outputs PCM signal OR Dolby digital signal depending of the TV channel.

My HARMAN KARDON HK990 STEREO AMP has digital inputs that ONLY accept PCM

I need to put a module between them that convert DD to PCM and bypass PCM

I am not able to find this module ¿is there any in the market?
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Old 6th November 2011, 11:45 AM   #2
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The DD signal is usually surround signal. You need a surround receiver, maybe is time to upgrade.

There are modules that will DECODE the DD to analog signal, but I am not aware of one that will do a correct REMAPING from 5.1 to 2.0...
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Old 6th November 2011, 12:02 PM   #3
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¿UPGRADE THE HK990? this is a stereo system.

I am searching for a module doin this JOB (I think is a simple job transform DD into PCM)
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Old 6th November 2011, 03:18 PM   #4
grael is offline grael  France
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Are you sure your TV don't have a setting to output DD as stereo PCM?
It's a pretty common feature, my Sony KDL-40EX500 does this...
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Old 6th November 2011, 04:43 PM   #5
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my 42PFL7606 DOS NOT. I have contacted PHILIPS and they said they WILL NOT do it... no comments
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Old 6th November 2011, 04:45 PM   #6
Pano is offline Pano  United States
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That's too bad. Every TV and DVD player I've seen has this feature.
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Old 6th November 2011, 04:55 PM   #7
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PHILIPS does not IMPLEMENT IT... so ¿what posible solution for extracting sound from tv?

- Scart does NOT WORK due to anticopy LAW

- SPDIF is not compatible with my digital INPUT

- Headphone out... horroble solution

I wa looking a module with TOSLINL input that made the change from DD into PCM...
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Old 7th November 2011, 03:50 PM   #8
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Good topic. But I would formulate the question more generally:
How do I get from any multi-channel digital signal a high-quality two-channel down-mix (of interest for all user's, that have a lot of multichannel discs but no space in the listening room for a multichannel equipment (i. e. only two loudspeakers for stereo) ?
Fact is, a lot of Blu Ray discs don't offer selection for two channel mode resp. only in bad quality.

Quote:
Originally Posted by SoNic_real_one View Post
The DD signal is usually surround signal. You need a surround receiver, maybe is time to upgrade.

There are modules that will DECODE the DD to analog signal, but I am not aware of one that will do a correct REMAPING from 5.1 to 2.0...
I don't understand this term:
"REMAPING"

Last edited by tiefbassuebertr; 7th November 2011 at 03:56 PM.
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Old 7th November 2011, 11:45 PM   #9
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Well... with Dolby Digital you have 5 audio channels plus 1 for Low Frequency Effects.
He wants to send those into a stereo amplifyer (2 audio channels). He can choose to send just the L and R channels, but he will miss the voice (Center) and effects/music (SR, SL).
He can add the SR to R and SL to L (but that will increase the level too much). And the Center channel needs a different treatment.
That's why you need to remap the channels. Present continuous would be "remapping" if you are grammar police.

Last edited by SoNic_real_one; 7th November 2011 at 11:47 PM.
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Old 19th March 2012, 10:30 PM   #10
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If you not have to use digital input(I know this will the preffered solution), you could use a Gefen box like this:
Gefen, LLC - GefenTV Digital Audio Decoder
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