Jump to content
The Dark Mod Forums

Improve your TDM experience by playing with OpenAL Soft HRTF (better 3d audio)


Hiradur
 Share

Recommended Posts

First of all, thank you very much for the explanation how to load custom HRTF. Perfectly done.

 

One interesting question is: what is the license for HRTF data?

We have incorporated KEMAR data into 2.07 release, but I could not find any info about whether it is legally allowed or not.

I just hope that if OpenAL-Soft distributes it, then most likely we can too...

The same question applies to IRCAM datasets.

I would be happy to include all those HRTF profiles into TDM and allow player to choose one in-game.

But I'm not sure that redistributing them won't cause legal issues.

 

He means that HRTF-filtering does not work with speakers. HRTF-filtering emulates how the headshape and the shape of your ears interact with sound waves. With a perfect HRTF-Model (taylored to you), you should be able to hear perfect 3d audio using regular stereo head phones. If you use speakers, however, the HRTF-filtering will be performed twice, once in software and once due to your actual head and ear shape. This renders the filtering ineffective and may actually be perceived as a downgrade of software quality. With headphones, the head and ear shape have now effect, because the soundwaves are directly injected into your ear.

Yes, but with only two speakers you are anyway doomed to have weird 3D sound, don't you?

The HRTF would work as some sort of substitute for "crossfeed level", without which sounds are too easily going to one speaker only.

Link to comment
Share on other sites

One interesting question is: what is the license for HRTF data?

We have incorporated KEMAR data into 2.07 release, but I could not find any info about whether it is legally allowed or not.

I just hope that if OpenAL-Soft distributes it, then most likely we can too...

The same question applies to IRCAM datasets.

The IRCAM page does not list any license. I will contact the owner of that page.

 

OpenAL Soft uses "GNU LIBRARY GENERAL PUBLIC LICENSE" so the default mhr is probably also under that license. So the question is whether that license is compatible to ours.

 

 

stgatilov, you said you don't hear the 3d effect very well. Do you get better 3d-audio results from one of these hrtf-sets? :-)

Link to comment
Share on other sites

The IRCAM page does not list any license. I will contact the owner of that page.

Thanks.

 

OpenAL Soft uses "GNU LIBRARY GENERAL PUBLIC LICENSE" so the default mhr is probably also under that license. So the question is whether that license is compatible to ours.

 

You forgot "2". This is LGPL v2.0.

It seems to be compatible with GPL v3 which TDM source code uses.

 

stgatilov, you said you don't hear the 3d effect very well. Do you get better 3d-audio results from one of these hrtf-sets? :-)

 

To be honest, I did not spend much time with it.

I checked that I can follow the position when the guard goes from left to right. And that was all :D

But front-vs-back and on-the-side positioning was not clear.

I think I'll ignore these specialized GRTF datasets until I (or someone else) integrate it into TDM.

Link to comment
Share on other sites

I think I tried both setting no value and hrtf = auto in alsoft.ini, but it did not enable HRTF for me with headphones plugged in.

Are your headphones recognized as such in the OS?

 

Yes, but with only two speakers you are anyway doomed to have weird 3D sound, don't you?

Not necessarily. Positional audio on 2 speakers can be quite good. It is important to have the speakers set up a in an equi-distant stereo triangle though. HRTF over speakers sounds wrong and negatively impacts positional audio as far as my experience goes.

 

Wow, I have to say dataset 1037 works amazingly well for me. Better than my actual surround speakers.

If you have a set of surround speakers you should enable ambisonics processing in OAL Soft, set the proper decoder (speaker layout) and use hq-mode if possible. It's supposed to give very good surround sound over speakers. I heard it once and was impressed. But note that speaker placement is important here. Although there is an option to configure speaker positions manually I would try to stick to the "standard" for 5.1 (see 5.1 preset). This should give the best compability with other audio engines as well as movies and so on. That is unless you only use your speaker set for gaming, using a more balanced layout such as 4.0 quadraphonic may yield better results then.

If you have a 7.1 system you could even try the 3D7.1 speaker for an improved sensation of height.

 

It's best to refer to the documentation if you want to dive into the topic: https://github.com/kcat/openal-soft/blob/master/docs/ambisonics.txt

  • Like 1
Link to comment
Share on other sites

Join the conversation

You can post now and register later. If you have an account, sign in now to post with your account.

Guest
Reply to this topic...

×   Pasted as rich text.   Paste as plain text instead

  Only 75 emoji are allowed.

×   Your link has been automatically embedded.   Display as a link instead

×   Your previous content has been restored.   Clear editor

×   You cannot paste images directly. Upload or insert images from URL.

 Share


  • Recent Status Updates

    • Nort

      I just gave myself vertigo. A pleasant kind of vertigo, like the world has been lifted off my shoulders. I'll explain:
      Yesterday I saw to my dismay, that I had made my entire map two - two - units too short on every level - that every set01 piece was sticking 2 units into the ceiling. That's basically 402 brushes that needs to be realigned (minus the ground floor brushes).
      I knew enough about selections to do all of that in a very tense five minutes, and it compiled without leaks. (Thank you so much, Dark Radiant devs, for making an editor with such care for precision that you can align hundreds of brushes perfectly at once (which is not something I can say for Valve's Hammer editor, which has some serious issues on that front, which actually made me just quit it in disgust).) However, the result is that the entire level has now been stretched a barely noticable 2 units, and it will take some getting used to psychologically.
      · 0 replies
    • Nort

      My workflow is basically running from a chain of disasters, eventually trying to seek shelter in former disasters. It's not ideal - it's just my life.
      When I abandoned my first map, it was out of a typical mental breakdown, and so I returned to find a skybox void where the kitchen door should have been (due to a misplaced visportal) and two overlapping brushes Z-fighting on the kitchen floor.
      I've now cleaned up the last bit of mess, by cleanly separating every floor into its own layer. Now I can finally work on each floor in peace.
      ...not that I really needed to. Once you get skilled enough, the orthographic messes, well, I'll let this video speak for itself:
       
      · 1 reply
    • Nort

      Beams, beams, beams...
      Support beams, and cross beams, and then beams to fixate the support beams to the cross beams. The more beams you have in a map, the better. There's walls, floors and ceilings, but the rest of the map is pretty much just beams. Beams makes a thief happy.
      · 0 replies
    • jaxa

      Embracer Group is Buying Square Enix Montréal, Eidos, and Crystal Dynamics for “Only” 300 Million USD: https://wccftech.com/embracer-group-square-enix-montreal-eidos-crystal-dynamics/
      · 1 reply
    • duzenko

      Do we want fur in TDM? Like https://duzenko.github.io/webgl/
      · 6 replies
×
×
  • Create New...