I just got a surround sound receiver and am trying to get multichannel audio from the computer with the optical spdif connection.
For those unfamiliar with this connector it's old. your options typically are 2ch uncompressed pcm 44 or 48 khz or dts/dolby digital for multichannel, which is even lower bitrate than the stereo pcm, about 600 kbps. Whenever looking it up online, you always see the reply that surround sound pcm is not supported because of BANDWIDTH limitations. Maybe this was true once.
However the spec does not actually limit the bandwidth at all, and even OLD equipment goes way beyond this. 192 khz 24bit stereo works fine on some models. However, the extra bit rate is used ONLY for frequencies humans can't hear in stereo mode - wtf?
Experimenting with windows settings, my device supports stereo, 24 bit, 96 khz using this connection. that's 4608000 bits/second. 6 channel, 16 bit, 48 khz audio is the exact same bit rate, yet it's not supported by ANYTHING spdif afaik.
There's nothing I can do for this box I have other than using DTS, but does anyone have a clue WHY it is like this? Why would the manufactures make this ridiculous configuration? Wouldn't surround sound be far more appealing to the general public than this moronic hyper sample rate crap? Or has anyone had success with 5.1 pcm over spdif? I know I could use HDMI (with a different receiver lol) or a sound card with analog 6ch output, but those both have their own quirks and inconveniences.
Spdif is STILL the standard connector between TV sets and AV receivers, this seems completely ridiculous to me. These days, Dolby/DTS do nothing but reduce quality while rent-seeking from manufactures and consumers. The old modes could still be supported for legacy reasons, but this is an obvious opportunity for improvement wasted for decades.
What a miserable state.
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you got electric isolation and flawless digital sound, is something still worrying you
big boys are using hdmi arc for sound?
Worried isn't the word. It's just too bad that we have the bandwidth for uncompressed surround sound here and it doesn't work because nobody cares about it.
I can't use HDMI through the receiver for this setup. My computer's HDMI is already being used and the receiver won't pass through anything with the adaptive refresh rate enabled. It also has no USB input so this is the best it gets.
i bought three concert dvds with surround sound, everyone did their best and is pretty much shittier than stereo or software mixed mono
you could've just bought concert tickets and maybe had contact with actual females
The HT industry has moved to HDMI and forever will be. Whatever your setup is, you are deliberately making it difficult so you can create with busy work post.
It should be like this:
COMPUTER -> HT Receiver -> TV
I refuse to believe your graphics card has only 1 connection. You should run HDMI to theater and a parrallel connector from your displayport output (?) to the TV.
Or you can just do what 99% people on planet earth do and what I wrote first. Let the HT be the passthrough device to everything.
You can get 5 channel audio with spdif and I refuse to believe a noob like you could double-blind test the difference between 16bit and 24bit digital audio. No way.
HDMI can do 11.4 lossless Dolby Atmos + 2160p60hz video on a single connector. A 6ft cable costs like $10. There is no market to do what you want to do or why anybody with money would want to do it.
>It should be like this
No, it shouldn't.
Use E Arc return channel like a normal person
>just sacrifice an input for output purposes bro
moron
Oh no not the heckin HDMI input
i wish my amd display adapter had hdmi input, could plug cam into it and record stuff
What the frick are you talking about. I am talking about TVs.
>he has only one device to connect or wastes money on switches
He has a receiver. Why would you need switches?
I don't think SPDIF should've never been improved just because HDMI exists. Besides, try going to any home theater forum, they'll have a whole subforum for earc issues.
most graphics cards only have 1 hdmi connection. if you have, for example, a desk with 2 monitors plus a tv, that takes up all your outputs.
>hey'll have a whole subforum for earc issues
Using optical on a soundbar because eARC shit the bed not even 5min in
>you got electric isolation
No one is worried about electrical dangers in their home audio system.
Should we tell him?
what is the most moronic is that it is fiber, it would be really easy and cheap to give it a ton of bandwidth and channels
AES can do all sorts of magical things with the exact same cables and receivers/transceivers.
But unfortunately SPDIF is very much limited by the lack of standards. It's meant to do one thing and one thing only, flawless CD quality stereo audio. Everything else is someone trying to expand the standard on their own and that means varying levels of compatibility.
How come nobody ever managed to standardize one of these custom hackjobs into a real thing? No idea. I'd guess there just wasn't that much demand for it.
>using spdif
>There's nothing I can do for this box I have other than using DTS, but does anyone have a clue WHY it is like this? Why would the manufactures make this ridiculous configuration? Wouldn't surround sound be far more appealing to the general public than this moronic hyper sample rate crap?
It might be a lot easier for the thing to just run at a higher (and out-of-spec) speed, rather than completely change how the uncompressed audio is routed in the receiving end.
Just use EARC like a normal person for surround sound.
>but does anyone have a clue WHY it is like this?
>These days, Dolby/DTS do nothing but reduce quality while rent-seeking from manufactures and consumers.
You answered your own question.
The manufacturer should prefer NOT to pay dolby and DTS license. Not to mention HDMI license. Spdif would have been royalty free ( I think? Or was there a fee for that too?) seems like either USB oe good old analog is still the best solution but so many avrs don't support them
Royalties and shit are pennies
You actually do need Dolby because even broadcast TV sometimes uses Dolby 5.1
Digital home audio system, no less. It's not like you're even eliminating ground loops since no sound waves pass through spidf
Ground loops can pass through coax spdif if it's referenced to the same ground as your amp is. I've seen that before.
It's called ADAT Lightpipe, and it can carry 48KHz 8 channel audio. The question is "why does my crappy, bottom-of-the-barrel mass-market receiver not support a format used only in pro studios that no media or players were ever released to consumers with?"
After the CDs/SPDIF debacle record labels and movie studios would never release media on another format that didn't use patents and licensing to make it illegal to build a capture device. HDMI (with included ~~*HDCP*~~) is the only modern consumer format.