Ambiophonics - An experiment and a How to using foobar2000.

**durwood** · 03-05-2009, 03:24 PM

I don't use RACE. I use the simple MAP/mosc plugin posted a while back which can easily be loaded into winamp or foobar through the VST bridge plugin.
http://www.mp3car.com/vbulletin/1248033-post20.html

I updated the second post in this thread. Anyone can try this, you don't need me to tell you it's good or bad. Decide for yourself.

**WuNgUn** · 03-05-2009, 04:12 PM

Can you make that work with Audiomulch?

When I load the BACCH setup, it's outputing to 'soundout' 'auxout4' and 'auxout2'....
SoundOut is only fed by the one XVolver...is that all that's needed?
I want 2 channel out, but I don't see how it's s'pose to be setup...

And what the hell is the CXC filter?

**durwood** · 03-05-2009, 09:07 PM

soundout is for 2 channel. the other ones are for if you have 4 channel input 4 channel output. the CXC is a convolution plugin. You have to select multi IR and then load in the .wav of either the BAACH or RACE. Sampling frequencies have to match to what your soundcard is set to. If you don't hibernate, it will not reload the IR wav convolution files everytime you restart the PC.

You can load VST's into audiomulch. It needs to go into the VST folder for audiomulch.

**WuNgUn** · 03-06-2009, 07:24 AM

Thanks Durwood...
So soundin and soundout chain for 2 channel...simple.
Would it be doable to have 2 channel in a 4 out?
Of course, I would need to run another, seperate LSFilter x-over...hmmmm. I am running front/rear in the car, so...
Now, you say 4 channels available...I see 4 input channels, but there are 3 pairs of outputs listed! AUXOut2 looks like just a by-pass summing of the 4 input channels...

Also, I don't see where to setup sampling frequency in the plugin...I'm sampling 24-bit, 96Khz...does this mean the BAACH wav file must be at the same sampling rate?
It keeps telling me to check channels and sampling rate when I try to load it...

I'm excited to test this, as I haven't run this plugin before...

What adjustments do you make due to the extra width of the cars speakers?

**durwood** · 03-06-2009, 01:48 PM

You can run your soundcard at 96Khz. If the impulse was created at 48khz, the soundcard has to be set to 48khz, 44.1->44.1, etc etc.

Extra width of car speakers? You will get bad results/less than optimal if not properly positioning the speakers. You cannot leave them in a stereo postion and expect good results. They have to be close to each other. That is a part of how ambiophonics/stereo dipole works. Read up on how it's supposed to be setup. It's all there. I even summarized on post 2 with pictures.

**WuNgUn** · 03-06-2009, 02:26 PM

Originally Posted by durwood

You can run your soundcard at 96Khz. If the impulse was created at 48khz, the soundcard has to be set to 48khz, 44.1->44.1, etc etc.

Extra width of car speakers? You will get bad results/less than optimal if not properly positioning the speakers. You cannot leave them in a stereo postion and expect good results. They have to be close to each other. That is a part of how ambiophonics/stereo dipole works. Read up on how it's supposed to be setup. It's all there. I even summarized on post 2 with pictures.

That's just it...how do you have a setup in a car with the speakers at about 50~75cm positioned at ear level about 2~3m from the listener?
Near impossible...
Unless you run a stereo pair in each footwell or something?

My front speakers are in my doors, about where my knees are...facing each other...
The rears are just below shoulder height, and again, facing each other.

How are your speakers setup ?

**durwood** · 03-06-2009, 03:36 PM

Initially, I compromised as car audio always is but found that since you are closer ~1-1.5m the spacing between them needs to be closer. I placed a pair of widebanders on my dash moving them around until it worked. Then I built my test enclosure based on that spacing it is on my dash. If you are going to use speakers in the doors, forget trying this at all in the car. It will be a waste of time.

I prefered the original CXC filters over RACE, BACCH sounded better than the original CXC, but now I prefer the much simpler MAP plugin.

**jiggad369** · 03-08-2009, 09:34 PM

Where can I find the plugin? Mind sharing some pics of the install of the speakers in your car?

**WuNgUn** · 03-08-2009, 11:50 PM

There are links in this thread...
And 2X on the pics!

**durwood** · 03-09-2009, 07:23 PM

You guys can't visualize? Don't worry about how I'm doing it. It tells you how to set it up, it's up to you to figure out where you are going to shoehorn in your speakers. Use your melon.