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The computer surround sound industry is neglecting us, guys, face it! - Page 2

post #11 of 12
Thread Starter 
The reason I was asking is because as I mentioned, the z-5500's receiver is very small and it has the decoder built into it and I was just wondering why there is a decoder biult in if the soundcard can do the decoding. There is too much misinformation out there and too much marketing jargon to really understand it all.

I have never seen any external decoders that are separate from the amplifier. I suspect the problem lies with dolby labs. They change the technology so fast no one can really adopt it and embrace because of licensing issues. The licensing cost is outrageous. For instance, DVD players can pass the dolby digital signal through the optical output, but PC games do not AFAIK unless you have a soundcard which has Dolby digital LIVE. And then you cannot have a Dolby digital signal AND use EAX at the same time. But since EAX is phased out and replaced by OpenAL, I don't know other problems this will bring. But I believe this is the issue with PC gaming, is that there is no standard so companies take a risk making hardware specifically for PC because it might end up being a crap shoot.

I found this post on another forum. It explains it perfectly.

Only three formats can be carried over SPDIF (optical):
1: 2.0 PCM
2: Dolby Digital
3: DTS

As such, audio already encoded in Dolby/DTS formats can be passed through the SPDIF connection, and decoded elsewhere. Unencoded audio is limited to 2.0 uncompressed audio.

So, for instance, if you tried to play a game, you'd be limited to 2.0, as you have no way to convert the 5.1 uncompressed audio signals that PC's typically use to either Dolby or DTS formats. You need a soundcard with realtime encoding support (Dolby Digital Live or DTS-Connect/NeoC) to handle the encoding process.
Edited by aweir - 3/4/11 at 11:52pm
post #12 of 12
The Z-5500 control pod has a decoder yes, but it's not a receiver. It doesn't have amplification or a tuner built in. The power comes from the amp in the Z-5500 sub. If they put that amp in the control pod it would definitely not be as small.
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poo
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CPUMotherboardGraphicsRAM
Phenom II X4 920 Gigabyte GA-MA790X-UD4P Sapphire HD 5850 8GB G.Skill PI Black 
Hard DriveOptical DriveOSMonitor
~13 TB Samsung SH-S223L Win7 Pro x64 Dell U2412M 
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Filco Majestouch Corsair HX620 Corsair 650D Logitech G400 
Mouse PadAudioAudioAudio
Puretrak Talent Yamaha RX-V795 Energy RC-10 Audio Technica ATH-AD700 
Audio
Chrysalis Bassmatrix-10 
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