Aurora for Audacity Beta, first release of 5 plugins for Audacity

No, it is materially impossible, as the Audacity team removed "de facto" the possibility of adding additional modules. They made it so complex and so "secure" that noone will be able anymore to do this...

Why do you say that the modules are not working anymore? they are working perfectly here!
Juts download the good old Audacity 2.0.0 form the Aurora web site, possibly the version with ASIO support enabled (the password for unzipping is angelo), and then use Aurora without problems!
www.angelofarina.it/Public/Aurora-for-Audacity/
Bye!

Angelo Farina

Hi, I installed Audacity 2.0.5 with the modules, generated the sweep and filter but I have some problems: The only way to record 4 channels is to use Wasapi as ASIO is not available but that didn't work and even using MME in stereo I get 2-channel record of the sweep. I use Aurora convolver with both tracks convolved with the filter but I only get an empty mono track.

I'm using a Zoom F8 (96K, 32 bit floating). Any hints?

In your case, as you record a synchronous recording of 4 channels, better to switch back to version 2.0.0, for which we made available the ASIO-enabled version. It is here:
http://www.angelofarina.it/Public/Aurora-f.../2.0.0/Windows/
The password for unzipping the ASIO-enabled executable (which you should copy over the standard version executable) is just my name.
Of course you need to use the Aurora modules fopr version 2.0.0.
Regrading convolution, after recording your 4-channels sweep from the microphones, and imported also the invsweep, your situation will be something like this:



Now you invoke the Aurora Convolver, drag the A-format channels to Data and the invesweep to Filters, and select the "one for All", forcing this single inverse filter to be applied to all 4 input channels:



Press Continue:



Select "full Autorange and presse Calculate! The result will be 4 new mono tracks, containing the deconvolved impulse responses...



Now you can cut short just the portion of the linear IR you need, and export it to a single 4-channels WAV file (of course this 4-channels export is possible only after having disabled the stupid option to downmix to stereo which Audition sets by default).

You know that these spatial parameters are quite unreliable, do you know?
Said that, the Aurora Acoustical Parameters module can compute Jlf, Jlfc and Lj.
You should analyze the B-format impulse response, in Fuma format (not Ambix).
So first convert your impulse response to Fuma B-format, then open it with Audacity and use Acoustical Parameters for computing Jlf.
A correct measurement requires that the X axis of the microphone was pointing exactly to the omnidirectional sound source. If the alignment was wrong, you can fix it using a free rotator plugin, such as IEM Scene Rotator, and using O3A Flare for checking that the alignment is correct.
Here an example of computing "spatial parameters" Jlf, Jlfc and Lj with Aurora for Audacity 2.0.0:

Here instead processing the same Ambisonics FuMa impulse response with the old good Audition 1.5 and Aurora plugins in XFM format:

As you can see comparing the two images, the values of these spatial parameters computed in Audacity 2.0.0 are completely wrong, while those computed by the Audition version of Aurora are perfectly reasonable.
Hence we can conclude that, if you are on a Mac and hence forced to use the old version 2.0.0 of Audacity, you cannot rely on the Aurora Acoustical Parameters plugin for computing correctly these spatial parameters.
I warmly suggest that you find and install the very old Audition 1.5, which runs perfectly fine on a Mac using Playonmac.

Edited by angelo.farina - 9/3/2020, 09:46