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Windows 7: Dolby Digital 5.1 volume control

30 Jan 2009   #11
hdjunkie

Windows 7
 
 

Quote   Quote: Originally Posted by igloo View Post
MC couldn't change the volume of the DD5.1 output.
Oh, just figured out what the number "50" is. It's the bloody volume.
You sound like an expert.


My System SpecsSystem Spec
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26 Feb 2009   #12
Dragonfly

Windows 7 Ultimate 32 & 64 -(Boot Camped Snow Leopard on a Mac Mini)
 
 

Quote   Quote: Originally Posted by mhealy View Post
I'm not sure if AC3filter works in Windows 7 or not but in Vista I was able to get volume control on my digital signals by allowing ac3filter to change the gain on the speakers before sending out the signal. This was also using MediaPortal instead of Media Center so take with salt.
Found a hack that reportedly works with AC3filter and Win7, if anyone's still interested.

Part 2 Here.
My System SpecsSystem Spec
22 Sep 2009   #13
goantelope

Win7
 
 
fix

There's a simple fix for this issue, assuming you have some basic sound card control available through your driver. For reference, I'm using S/PDIF through a Gigabyte motherboard, with Realtek driver (and "Realtek Digital Output" control pane).

In this setup I can go to the "advanced" tab in the Realtek Digital Output Properties, and uncheck "Allow applications to take exclusive control of this device". By doing this you're forcing Media Center to mix audio (to share nicely with other apps) through software before spitting it out the S/PDIF. If I re-check this box I'll lose the ability to control volume during 5.1 playback in Media Center.

If you select the "shared mode" to be 5.1, then you can keep your nice surround sound. I can't tell any difference. Sweet.

Ughhh.... windows.
My System SpecsSystem Spec
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28 Mar 2010   #14
blaize

Windows 7 Ultimate + Windows Home Server
 
 

This is correct, My system hasn't changed for 3 years and it had full surround sound and volume control in Vista MCE and even some of the Win7 beta builds but once I bought RTM no control.
Thanks for your fix goantelope I will try this once I get home tonight

Tony
My System SpecsSystem Spec
18 Mar 2016   #15
thomnet

Windows 7 Ultimate x64, Windows 7 Home Premium x64
 
 

This is an old thread but I use sp/dif audio exclusively with Microsoft drivers (Win 7 Ultimate).

I have full volume control for all aps EXCEPT Media Center, so the issue is within the software / OS. So if the volume can be controlled for most apps it must be an issue of controlling the volume via analog, pre A to D conversion on it's path to the SP/DIF output.
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 Dolby Digital 5.1 volume control




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