Hi Lorenzo, I'm a longtime lurker on this discussion group and I think this is the first time I've reached out to anyone directly via the listserv. But I wanted to say I recently tried your 3DTI VSTs and was really impressed with your binauralization algorithm. I'm not sure if it's just a happy coincidence that your default settings happen to be a good fit for my HRTF me or what (I haven't played with other HRTF settings yet), but I felt a noticeable improvement in localization in comparison to many other 2ch-binaural or ambisonic-binaural decoders I've used. I was most impressed when using it to make a virtual binaural "array" using different speaker locations mixed together. I think it might be the closest-sounding to native binaural that I've heard so far.
I did, however, run into a problem: I can't seem to save VST parameters. I'm using the latest version of Reaper on an intel Mac. Whenever I reload a project or copy/paste an instance of the VST, all the parameters including azimuth/elevation get reset back to default. The only workaround I've found so far is to write parameter automation points into Reaper itself. Is this the intended behavior, or is there a way to save parameter settings without having to write automation? I'm also curious if you have plans to make a multichannel input version that would allow for cube/7.1.4/5.1 etc inputs without having to build a virtual array with many tracks/complex routing? Or an ambisonic decoder using your same algorithm? I suspect it would sound amazing! Thanks and much appreciated, - Brendan -- Brendan P. Baker brendanpatrickbaker.com Twitter: @brendanpbaker <https://twitter.com/BrendanPBaker> <bren...@drivebyhighfive.net> On Tue, Dec 6, 2022 at 12:28 PM Picinali, Lorenzo <l.picin...@imperial.ac.uk> wrote: > Hi Bosse, > > so...for the reverberation, the 3DTI toolkit requires a set of Binaural > Room Impulse Responses, specifically one measured on the front, one back, > on left, one right, one above and one below. You can of course do it with > just the ones on the horizontal plane, and also with just the left and > right ones. In your case, you have a 1st Order IR for a few positions on > the horizontal plane, so...you'll need to add the binaural "component. > > A "dirty" way of doing that could be to decode each of your 1st Order IRs > to a virtual cube loudspeaker layout, and convert each of the loudspeaker > channels to binaural by convolving them with the HRIR corresponding to > their individual position (you can use your own HRTF or a KEMAR one, or > else). The resulting binaural response (i.e. summing all eight > "binauralised" loudspeaker channels) from the frontal channel source will > be your front BRIR. You can then average the two from the back channels to > obtain a rear BRIR. Then again average the front and back left ones to get > your left BRIR, and front and back right ones to get your right BRIR. > You'll then need to remove the direct path signal and substitute it with > the same amount of zeroes (as the direct path rendering will be managed by > the 3DTI Toolkit via direct convolution with the HRTF), save the 4 BRIRs in > a sofa file, and import them in the VST. For these last steps (remove > direct path and save in sofa file) I should have some ready Matlab scripts > - please email me directly and I can send them over! > > I hope this helps! > > Best > Lorenzo > > > -- > Dr Lorenzo Picinali > Reader in Audio Experience Design<https://www.axdesign.co.uk/> > Dyson School of Design Engineering > Imperial College London > Dyson Building > Imperial College Road > South Kensington, SW7 2DB, London > E: l.picin...@imperial.ac.uk > > http://www.imperial.ac.uk/people/l.picinali > https://www.axdesign.co.uk/ > ________________________________ > From: Sursound <sursound-boun...@music.vt.edu> on behalf of Bo-Erik > Sandholm <bosses...@gmail.com> > Sent: 06 December 2022 16:29 > To: Surround Sound discussion group <sursound@music.vt.edu> > Subject: Re: [Sursound] about principled rendering of ambisonic to binaural > > Hi Lorenzo > I have FOA recordings of sweeps from a very good listening room that i want > to use as a virtual binaural listening room for commersial music. > > I have responses for stereo, virtual center and back channels for 5.1 > > Is it possible to use your VSTs for such a setup? > Any tips on how to do it if so. > > Bosse > > On Sun, 18 Sept 2022, 11:11 Picinali, Lorenzo, <l.picin...@imperial.ac.uk> > wrote: > > > Hello, > > > > I can advertise our binaural 3D Tune-In Toolkit, which exists also in the > > form of VST plugin (as well as standalone application, Unity and > Javascript > > wrappers). You can just create one instance of the plugin for every > output > > track, and spatialise that in the position where the loudspeaker should > be. > > We have a version of the plugin with reverb, which is easy to use but > > rather heavy from the computational point of view, or an anechoic > version, > > with a bus reverb, which is definitely more efficient - in the downloads > > you will be able to find a template Reaper project which shows how to > setup > > the anechoic and bus reverb plugins. > > > > An example of the functionalities of the Test Application can be found in > > this video (use headphones when listening) - the VST plugin creates of > > course the same spatialisation effect. > > > > https://www.youtube.com/watch?v=osJQ0Kxv1P0 > > > > The Test Application (the one you see in the video above) is available > for > > MacOS, Windows and Linux at the following link: > > > > https://github.com/3DTune-In/3dti_AudioToolkit/releases/latest > > > > At the link above, you can also download the VST plugin, both for MacOS > > and Windows, as well as the Unity wrapper. > > > > If interested, you can find some details about the 3DTI Toolkit spatial > > audio implementation in this paper: > > > > > https://journals.plos.org/plosone/article?id=10.1371/journal.pone.0211899 > > > > And the open source code is available from the GitHub account: > > > > https://github.com/3DTune-In/3dti_AudioToolkit > > > > If you have a chance to come around in the London area, we can measure > > your HRTF so that you can use that for your mixes - just get in touch! > > > > best > > Lorenzo > > > > > > > > > > > > > > > > -- > > Dr Lorenzo Picinali > > Reader in Audio Experience Design<https://www.axdesign.co.uk/> > > Dyson School of Design Engineering > > Imperial College London > > Dyson Building > > Imperial College Road > > South Kensington, SW7 2DB, London > > E: l.picin...@imperial.ac.uk > > > > http://www.imperial.ac.uk/people/l.picinali > > https://www.axdesign.co.uk/ > > ________________________________ > > From: Sursound <sursound-boun...@music.vt.edu> on behalf of Ralph Jones > < > > rjonesth...@comcast.net> > > Sent: 18 September 2022 01:51 > > To: sursound@music.vt.edu <sursound@music.vt.edu> > > Subject: Re: [Sursound] about principled rendering of ambisonic to > binaural > > > > > > ******************* > > This email originates from outside Imperial. Do not click on links and > > attachments unless you recognise the sender. > > If you trust the sender, add them to your safe senders list > > https://spam.ic.ac.uk/SpamConsole/Senders.aspx to disable email stamping > > for this address. > > ******************* > > I’m a composer, not a mathematician, so while I try, I don’t get very far > > at understanding discussions like this. But the subject is of real > concern > > for me, because I am currently working in 5.1.4 surround format > > (channel-based, not Atmos) and I would dearly love to find a > mac-compatible > > VST plugin that would convincingly render my work in binaural. So, is > there > > a plugin that does what Fons describes here? (i.e., given azimuth and > > elevation for each channel, render the signals to binaural convincingly, > > including an impression of elevation for height channels.) > > > > Ralph Jones > > > > > On Sep 13, 2022, at 9:00 AM,Fons Adriaensen wrote: > > > > > > Message: 1 > > > Date: Tue, 13 Sep 2022 15:59:49 +0200 > > > From: Fons Adriaensen <f...@linuxaudio.org> > > > To: sursound@music.vt.edu > > > Subject: Re: [Sursound] about principled rendering of ambisonic to > > > binaural > > > Message-ID: > > > <20220913135949.ugwflytibwa7p...@mail1.linuxaudio.cyso.net> > > > Content-Type: text/plain; charset=iso-8859-1 > > > > > > > > > > [Snip] > > > > > Another question is if for high quality binaural rendering, starting > from > > > Ambisonic content is a good idea at all. > > > > > > Simple fact is that if you want really good results you need very high > > > order, and > > > > > > 1. such content isn't available from direct recordings (we don't have > > even > > > 10th order microphpones), so it has to be synthetic, > > > > > > 2. rendering it from an Ambisonic format would be very inefficient. For > > > example for order 20 you'd need 441 convolutions if you assume L/R head > > > symmetry, twice that number if you don't. > > > > > > Compare this to rendering from object encoded content (i.e. mono > signals > > > plus directional metadata). You need only two convolutions per object. > > > Starting from a sufficiently dense HRIR set, you can easily generate a > > > new set on a regular grid with a few thousand points, and interpolate > > > them (VBAP style) in real time. This can give you the same resolution > > > as e.g. order 40 Ambisonics at fraction of the complexity. > > > > > > > > > Ciao, > > > > > > -- > > > FA > > > > _______________________________________________ > > Sursound mailing list > > Sursound@music.vt.edu > > https://mail.music.vt.edu/mailman/listinfo/sursound - unsubscribe here, > > edit account or options, view archives and so on. > > -------------- next part -------------- > > An HTML attachment was scrubbed... > > URL: < > > > https://mail.music.vt.edu/mailman/private/sursound/attachments/20220918/54475ea0/attachment.htm > > > > > _______________________________________________ > > Sursound mailing list > > Sursound@music.vt.edu > > https://mail.music.vt.edu/mailman/listinfo/sursound - unsubscribe here, > > edit account or options, view archives and so on. > > > -------------- next part -------------- > An HTML attachment was scrubbed... > URL: < > https://mail.music.vt.edu/mailman/private/sursound/attachments/20221206/48d99eea/attachment.htm > > > _______________________________________________ > Sursound mailing list > Sursound@music.vt.edu > https://mail.music.vt.edu/mailman/listinfo/sursound - unsubscribe here, > edit account or options, view archives and so on. > -------------- next part -------------- > An HTML attachment was scrubbed... > URL: < > https://mail.music.vt.edu/mailman/private/sursound/attachments/20221206/25401774/attachment.htm > > > _______________________________________________ > Sursound mailing list > Sursound@music.vt.edu > https://mail.music.vt.edu/mailman/listinfo/sursound - unsubscribe here, > edit account or options, view archives and so on. > -------------- next part -------------- An HTML attachment was scrubbed... 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