|Originally posted by Telv|
you won't get 5.1 channel audio on non-DVD sources (games, mp3 audio etc) unless your nForce2 board has the SoundStorm Dolby Digital Encoding feature.
|Originally posted by PAP|
Do any add-in cards have that feature (5.1 on non-dvd sources) or do you have to have a MB that does it?
|Originally posted by Sherbona|
With DTS from a DVD, you are merely passing through the pre-encoded DTS audio to your receiver for your receiver to decode - no real-time encoding is needed.
Edit - I may have misunderstood the question - if so, never mind me!
|Originally posted by yurd|
I have a soundstorm nForce board. I have 1 optical cable from the HTPC to the receiver, no other audio cables. I never have to change the input source on the reciever, (unless i want to listen to the radio) which is convenient.
The mobo encodes almost all audio that's not already DD or DTS to DD 5.1 in hardware.
That being said, there are some things to watch out for.
When using SPDIF passthrough, some HDTV streams and DVD menus are not DD, they are just Dolby pro logic, and this gets passed through the SPDIF as a digital stream. This isn't a big deal, just something you may notice.
Some audio decoders, especially after changing audio/video/mobo drivers once or twice, will decode a DD or DTS stream (even though you have spdif checked), then pass it to the nForce encoder to get re-encoded to DD5.1. This IS a big deal, you'll quickly realize how much dynamics the nForce encoder lacks. This can be a real pain. If you're watching a DVD that you're familiar with, you'll probably pick it pretty quickly when it does this. The easiest way to check to see if it's working correctly is open the nForce Audio control panel and see if there is any activity on the equalizer-visualization thing. If there is, you're encoding.
I've found that NVDVD audio decoders will do this often. The rest just seem to be on a per HTPC build basis. There may be some real rhyme or reason to it, but i've never paid attention, as any audio decoder just passing the stream through SPDIF should sound the same. Before Zoom player, this was a real pain, as it limited the DVD player that I could use.
Just to make sure i'm clear, this problem isn't something that is intermittent, so if you set up the HTPC, then you check for this problem and don't have it, you're good. It won't pop up for no reason. But if you install another decoder, or change your drivers, check again as the problem may show up.