So if you omit the subwoofer if you simply transmit 5.0 per channel you will get pure 640/5 = 128KBs. Maybe it is not the fault of the PCM transport layer (cause DTS transmits a lot more KBPS than DD) but as far as I know DD is Encoded at 24-bit/48kHz with a transfer rate of 640Kbs I don't think stating that someone else has a mere and wrong opinion helps the other one to learn (in case you are right). for me at least.Ĭ.) By the way you may explain to me what is wrong about my "opinion" in regards to the compression required to transport DD 5.1 (or even more channels) through 2.0 PCM? I am fine learning stuff.
#USB DOLBY 5.1 PRO#
For the next USB Audio Device to arrive I will try that with my MacBook Pro Retina first.ĪppleHDA ALC889 via Multibeast on x58a supplies working PCM/2.0 optical but no Encoded Digital Audio option for TOSLink. In the Audio Midi Setup in Audio Devices "Encoded Digital Audio" is selected automatically when playing back Dolby Digital in VLC now.ī.) For my Hackintosh the PCIe and USB Audio Devices I have tried so far did not allow selecting Encoded Digital Audio. There are tons of threads about that on the net, no point discussing. So the only thing "broken" about OS X that remains is it's ability to not always play AC3 well through quicktime components. For me the trick was NOT to chose encoded digital audio because then the primary sound interface would change to some analog one, but to chose the same interface and then setup VLC correctly (which was already).Ī.) So now Dolby Digital is working via TOSLink on my Macbook Pro Retina. Well, so somehow it did not work for me via VLC, but now it does. your machine is the dolby decoder and sends out decoded audio information) You won't have noise issues if you use optical (or good coax) but you won't get great sound either (that will only work if you have a receiver/amp that gets discrete audio information per channel. in essence the sound quality you will get from consumer Dolby Digital / DTS are ****ty. I talked to some of the ESI support and they explained that 5.1 (even 7.1 or 11.2 or whatever) is passed through as an encoded bitstream over 2.0 PCM (so it is 48Khz, 16bit I think). * On a side note, encoded Dolby Digital / DTS is consumer ****. Sounds like others have luck with Soundblaster USB stuff too (Surround, Omni etc) even my ESI MAYA44e did not allow that, it allows to connect 4 surround speakers (4.0) via analog. I have tried 2 different (other, see above) ones and no one allowed Encoded Audio / SPDIF Pass-Through.Į.g. Son the link you left (thank you!) it looks very much like the USB Audio you are using is a Soundblaster: My optical out on my X58A motherboard also works but also only transmits 2.0 PCM, no Dolby Digital / DTS / Encoded audio* - That's the same if I am using my MacBook Pro Retina Late 2013 with a mini-TOSLink. Building a CustoMac Hackintosh: Buyer's Guide
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