Nvidia High Definition Audio 27.21.14.5509 with Dolby Home Theatre V4 enabled

maybe its working for you anyway XD

can you post the original?

 

Aha, got it!

I didn't see your edit about the dotnet_appx till just now, installed that then removed the driver (without delete driver files set) then redetected hardware.
now have the Dolby Digital selection and working graph.

@PhazDelta you will get that error if you try to set a multichannel speaker mode while the format is DD or in reverse, setting DD while in a multichannel speaker config.

 

what is multichannel speaker mode ?

edit : i have 2 channel mode because i have connected my headphone to green jack in my monitor

 

new one is also 1.3.38.28, though has the display driver style versioning in the inf.

How odd!

Something tells me Ampere will carry 455 versioning

 

Why is this useful though (in all seriousness)? If you use this you're lossy compressing the output as opposed to native 24 bit 48/96Khz, and you can install any number of free EQs if that's what you need.

 

it doesn't alter content that is already multichannel

 

What's the point of encoding lossless PCM into lossy DolbyDigital for HDMI transport? HDMI 1.3 can carry uncompressed 8-channel LPCM 24bit 192kHz audio. Do you intend to pass it through from the TV to an AVR or soundbar via optical SPDIF? If you use the internal TV speakers then it's entirely irrelevant though (you get neither >2 channels, nor decent quality anyways).

 

Sorry, WHAT ???
How could the lossy DD have better quality than the lossless PCM it was compressed from?
By the way, DTS Connect exists, although rarely supported. It has higher bitrate compared to DD but PCM is the original uncompressed format, so PCM is superior to both of these lossy compressed formats.

 

Yeah choice is good.

What's your audio setup?

 

I meant an optical cable between the TV and the AVR. TVs can often pass through DD/DTS from HDMI to SPDIF. In that case, DD/DTS can offer you 6-channel through compression compared to 2-channel PCM.
That's the whole point of these real-time DD/DTS encoders. It was used before HDMI 1.3 to open up >2 channel audio over SPDIF because PCM multi-channel wouldn't fit into the SPDIF bandwidth.
The DD/DTS is compressed from PCM like FLAC vs. MP3. Do you seriously claim MP3 sounds better than the FLAC it was converted from? How could the compressed format sound better than the original it was made form? Just how...?
Besides, you will never hear the difference through internal speakers (between compressed and uncompressed, be that DD vs. PCM or FLAC vs. MP3). that would require >$10k setup (high-end AVR and speakers in special listening environment).
My guess is your TV applies different processing to DD and PCM.

 

No this is incorrect. Janos kind of covered it but just to be clear -- DD is 16-bit 48Khz lossy compression. It has worse sound quality than 24-bit 48/96Khz PCM and even worse sound quality than lossy compression of 24-bit 48/96Khz sources.

One of DD's main advantages was transporting 5.1 channel sound over SPDIF by lossy compression. Without this, SPDIF only has the bandwidth to transport 2 channels uncompressed. HDMI can can transport 8 channels uncompressed at 24-bit 96Khz, this is one of the key reasons HDMI was developed. There's no need to use DD over HDMI -- you're literally going backwards and throwing away sound data that you don't have to.

Even when you're using 16-bit 48Khz sources -- which most games are, you're still generating worse sound by lossy compressing it instead of transporting it uncompressed over HDMI. Let alone playing movies or music files that are 24-bit 48/96Khz, where you are throwing away even more information.

If it 'sounds' better, it's not the DD encoding -- it's the other filters you're applying, like the EQ or any 'enhancements'. But if you do these enhancements through another program (and there are many out there) you can apply these on the uncompressed PCM source and it will sound even better than these same enhancements on a compressed source like you have now.

I think people see 'Dolby' and go 'Awesome! This will improve my sound!'. No, it won't. DD was a trade-off for channels vs quality. Now Dolby Atmos etc, these are a different kettle of fish (I've purchased the Dolby Atmos plugin for my system) but the DD encoder in these drivers is taking a step backwards for your sound quality over just using raw PCM output over HDMI.

 

it does improve sound in some cases, since it seems to do a good job of sampling DPLII audio in emulated games, as well as upmixing 2ch content in a way that usually doesn't work on pcm receivers.

but its an approximation of surround, does a fairly good job at it and the audiophile who can discern an actual difference between lossy DD and pcm is mentally ill.

 

DD does not create anything. It compresses what it gets.
Indeed, it opens up 6-channel from 2-channel, however, for that you need multi-channel PCM from the game / Window audio mixer (easy) and multiple speakers. In that case (>2 physical speakers), yes, do use DD if multi-channel PCM is not available (that needs HDMI 1.3+). Otherwise, use 2-channel PCM for 2 speakers and multi-channel PCM for HDMI 1.3+ (with the exception when you pass the audio through the TV between a PC with HDMI and an AVR with SPDIF only --- but only for >2 speakers).
I am not sure if Dolby has any technology for emulating extra physical speakers. There are such technologies (virtual surround, 360° spatial effects from a stereo speaker set) but it's a tricky thingy (you need nice, correctly positioned floor standing speakers with good room acoustics to work properly).