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AMD 7950 5.1 via HDMI?! - Page 3

post #21 of 27
Quote:
I don't understand? I use the adapter in the only way possible, which is TOSLINK from the PC to the adpater and then RCA to the soundbar. This is the adapter.

someone buying a optical to RCA adapter may conceivably want to connect a TOSLINK S/PDIF output of a device into a S/PDIF RCA input of an amp/sound bar. OR, they might want to connect the digital RCA output of a device into a optical TOSLINK input. The two conversions require different hardware, one has to read the optical connection and output an electrical signal, the other has to read the electrical signal and output the optical conversion.

I've just looked at the back of your motherboard and I see the confusion, yeah, you want to be doing as you state, optical -> digital as the adapter was intended.

I don't know how familiar with XBMC you are but System -> Services -> Audio Output should allow you to select your motherboards S/PDIF output and number of channels
 
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post #22 of 27
Thread Starter 
I got a soundcard to try and isolate the issues I am experiencing. I am beginning to think however that the issue is less of a problem than I originally thought, but normal Windows/ Software behaviour that can be replicated on any machine. In other words, what presented itself as one large problem, can be broken down into several smaller issues. In short I was naive to think that I would simply hook up the hardware and be able to enjoy surround sound from a Dolby Digital, DTS or PCM source file.

Obviously there are software as well as hardware limitations:

1) EDID - the TV is only capable to output 5.1 from internal sources such as OTA. This is why AMD HDMI will only give me a stereo option.

2) only certain software players (such as VLC) are capable of outputting 5.1 in the first place. Even when using the motherboards TOSLINK, players such as the default Windows Media Player will not play surround sound.

I assumed that when using HDMI or SPDIF, any player would simply pass the original digital audio file to the end device to be decoded and converted to analog by it. Obviously there is some digital to digital conversion taking place (done by the software player being used) before the signal is transmitted to the next device in the chain.

Case and point: I am unable to output 5.1 surround sound using SPDIF out when using anything except VLC Player and XMBC for playback This suggests that a software player must first decode a file into another digital format to then be passed on to the end device to be converted to analog.

I still don't understand the 'Why' and 'How' of this, but the above is my working theory for now.
post #23 of 27
HDMI always has to send an Audio signal. So if you want audio from a different cable it *may* cause issues, IDK.

I use HDMI to a receiver for 5.1. And even that is buggy. I have to use both DVI and HDMI to my monitor to get sound and set it to extended desktop. Otherwise the sound just clips in and out with using only HDMI.
post #24 of 27
Quote:
HDMI always has to send an Audio signal.

That's not true, I've plugged many DVI sources into my HDMI TV and AV amp without audio being transmitted. Unless that's not what you're meaning?
 
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post #25 of 27
Thread Starter 
Well, I returned the soundbar and am now looking for different speakers. I would rather go with better quality stereo than mediocre surround sound. This is not due to the "complications" I had which started this thread but due to the quality (or lack thereof) of the soundbar itself.

Thanks again for all your input!
post #26 of 27
I'd strongly recommend going down the route of a decent quality AV amp and building up your surround setup from there. Have a read around reviews of AV amps, this one seems a steal (http://www.whathifi.com/review/onkyo-tx-nr515) or this one if you want to spend a bit more money (http://www.whathifi.com/review/sony-str-dn1040). Then build up your speaker collection.

If you do your homework and watch eBay regularly you'll be able to pick up bargains as speaker technology hasn't really changed much in the last 10 years but with companies rolling out new models the older ones go cheaper and if you already have some decent speakers then you can just use them initially.

Going down the separate route means you'll have a far better sound and much more expansion options when technology and audio standards change as you can replace your amp independently of your speakers.

Personally I wouldn't bother with a sub and I run a 5.0 setup which my amp lets me select. If you get 5x decent quality speakers this puts out a far richer sound than a 5.1 of the same price for obvious reasons and you can start off buying two decent quality front speakers and build it up from there.

You'll end up spending a bit more and it won't be in quite such as neat a package as a sound bar and two rear speakers but I say it's worth it and I can guarantee you won't have the connectivity issues you did with optical as HDMI will just work . You'll also be able to output the full lossless surround audio formats (DTS-HD etc).
Edited by pharcycle - 6/15/13 at 5:38am
 
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post #27 of 27
Thread Starter 
Thanks again for being so helpful and for your input. Since this is technically a different topic, I will continuing this particular discussion here.
Edited by 8bitG33k - 6/15/13 at 8:45am
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