Localization Cue Correction (LCC)

[westonlast]

GitHub - MeteorStudioASU/lcc: LCC (Localization Cue Correction) is a solution for spatialized audio through stereo speakers. LCC is a lightweight implementation of crosstalk cancellation so your left ear hears the left channel of audio, and your righ

LCC (Localization Cue Correction) is a solution for spatialized audio through stereo speakers. LCC is a lightweight implementation of crosstalk cancellation so your left ear hears the left channel ...

github.com

I only just learned about this because it showed up as a component for Foobar2000.

foobar2000: Components Repository - LCC (Localization Cue Correction) DSP

foobar2000

www.foobar2000.org

It reads like a promising solution to stereo comb filtering, retrofitting stereo recordings playback to sound better. Of course there's much more to it than that, with timing and such.

It's appealing because it's a software solution. You can try it today. Only two speakers needed.

At the very least, could be a cool new toy, similar to things like Trifield decoding: https://www.foobar2000.org/components/view/foo_dsp_trifield

My vague understanding is it makes stereo loudspeaker playback better by intelligently processing the 2-channel signal to provide more separation, based on ScienceTM. Not 100% separation like with headphones, but more than what isn't provided by conventional 60 degree equilateral stereo. Like an optimized solution that falls between headphones and speakers.

It appears this was backed by a company in 2020, but then they went radio silent.

Thoughts? A solution without a problem?

 

[westonlast]

Not a single reply? Not even a nibble? I thought people here would be interested.

 

[digitalfrost]

Interesting. I have been using Ambiophonics and later Pano Phase Shuffler for a long time. I will test it out tomorrow.

 

[LIΟN]

Not a single reply? Not even a nibble? I thought people here would be interested.

E-library page - AES

AES E-Library ← Back to search

aes2.org

It appears to be based on the Race paper.
There are already several threads on XTC in ASR, including signal-based channel matrix, IR ping-pong, and universial or personal HRTF-based crosstalk canceling.

There are several threads as follows.

BACCH and other XTC

Trying to understand what bacch does… i asked chatgpt.. Is the above broadly how it works? I think at the most basic level all electronic XTC methods do what you are saying. Just because it sounds easy doesn’t mean it is(doing it well at least). If you go to the Princeton 3d3a labs website...

www.audiosciencereview.com

Dr. Edgar Choueiri explains BACCH

These days I finally managed to get my system back online. As I said initially, as an audio enthusiast I am quite curious to hear the effect of an XTC on my system. So I was about to download HAF X-Talk, which I think is still reasonably priced. However, I realized that the uBACCH demo does not...

www.audiosciencereview.com

 

[digitalfrost]

So the effect is quite strong and works somewhat. I would be good to have a manual to tell you how to setup the settings. I had the Delays set to 228us with other XTC solutions, but doing it with this plugin it completely doesn't work. There must be a formula to correctly calculate the delay, probably based on speaker distance.

e: Found it here https://docs.google.com/spreadsheet...---------------&gid=1037737478#gid=1037737478

I am not sure if the "suggested attenuation" is the LLC Decay gain? It is hard to a find a setting that will give you the spaciousness only without also changing the sound itself.

Here are my settings. I need the low gain to not affect the sound, otherwise it will get brighter. As with most XTC solutions, the sound is released better from the speakers, they disappear more.


Also, there is no .exe for windows, so I have to use the fb2k plugin. It would be good to have a VST plugin, that I could load into EqAPO and apply it systemwide.

e: The .exe is in the source code, but not on the release page. Still I don't like this virtual audio cable loopback solution.

e: I just realized the github repo is 5 years old already, or rather there were no updates since 2021. So probably just another dead project.

 

[LIΟN]

So the effect is quite strong and works somewhat. I would be good to have a manual to tell you how to setup the settings. I had the Delays set to 228us with other XTC solutions, but doing it with this plugin it completely doesn't work. There must be a formula to correctly calculate the delay, probably based on speaker distance.

e: Found it here https://docs.google.com/spreadsheet...---------------&gid=1037737478#gid=1037737478

I am not sure if the "suggested attenuation" is the LLC Decay gain? It is hard to a find a setting that will give you the spaciousness only without also changing the sound itself.

View attachment 424791
Here are my settings. I need the low gain to not affect the sound, otherwise it will get brighter. As with most XTC solutions, the sound is released better from the speakers, they disappear more.


Also, there is no .exe for windows, so I have to use the fb2k plugin. It would be good to have a VST plugin, that I could load into EqAPO and apply it systemwide.

e: The .exe is in the source code, but not on the release page. Still I don't like this virtual audio cable loopback solution.

e: I just realized the github repo is 5 years old already, or rather there were no updates since 2021. So probably just another dead project.

It will not be different from the Race method you originally used. Nevertheless, thank you for testing.

 

[HDavidson]

LCC Calculator. I set these parameters in foobar2000. I like it.

 

[Iichi]

LCC Calculator. I set these parameters in foobar2000. I like it.

Please tell me how you set the LCC parameters in foobar2000. I cannot even find the parameters page

 

[westonlast]

When you add the LCC DSP on the DSP Preferences page, double-click on the LCC row to open the component's settings.

I wish there was a way to apply this to all sources into my home theater stereo DAC. Like Blu-ray players, game consoles and such.

 

[Iichi]

When you add the LCC DSP on the DSP Preferences page, double-click on the LCC row to open the component's settings.

I wish there was a way to apply this to all sources into my home theatre stereo DAC. Like Blu-ray players, game consoles and such.

Thanks very much! Trying this on my temporary system after moving house, but I like what I'm hearing. Had to ignore the spreadsheet calculation as it did not work at all for me.

Indeed, I am looking at how to get this working in the future with all my media as you are. On Najda dsp preamp currently, though if Minidsp had this covered/updated I could move to their preamp.

This may be interesting - have not gone through it yet myself.
https://ambiophonics.wordpress.com/2023/08/17/guide-to-ambiophonics-home-theater/

 

[digitalfrost]

Tact made a HW device that you could integrate if you amps have preouts https://www.theabsolutesound.com/articles/tact-22-xp-dynamic-room-correction-preamplifier/

Also miniDSP sells an Ambiophonics module: https://www.minidsp.com/products/am...KgRzJd-g15T1AtlpEqKQi_yb8HnoUHZLUbwQDgd6DPIXu

With EqualizerAPO, you can also apply VSTs system-wide, sadly you need 64bit VSTs and there is no 64bit Ambio VST.

 

[dedobot]

I have no idea what Im doing but like it

The VU meter got third graph (FC) !

 

[digitalfrost]

If you guys like this, the IMHO better foobar plugin is:

343.4 KB file on MEGA

mega.nz

 

[westonlast]

See, that has too many settings and knobs. I like that LCC seems to work enough for me out of the box without even moving my speakers close together. I don't want to tinker with this endlessly. I want it to just work.