Hi, This conversation seems to have branched into a different topic: the effectiveness of various immersive audio methods in different circumstances.
Ambisonics and VBAP are suitable for regular, or near regular, loudspeaker arrays with a central listening area. DBAP is more suitable for wide area irregular arrays, or even zones within the array, as is one-loudspeaker-per-source sound for static sources. A little mentioned alternative here is Delta Stereophony, where the source sound is fed to each speaker with an appropriate gain and delay based on the distance of the source from each speaker. TiMax is based on this approach. I’m sure that d&b’s Soundscape, LISA, Iosono, Astro and several other systems aimed at large scale immersive audio are also based on this. It could be regarded as stripped down wave field synthesis, using a small fraction of the number of speakers required for true WFS. It could be called DBADP. Because of the number of calculations required, especially for moving sources, the trend here is for a dedicated hardware multi-channel spatial audio processor controlled by software, or messages from a digital mixing desk. A common format for these messages seems to be OSC. https://www.lightsoundjournal.com/2020/03/05/is-immersive-audio-coming-of-age/ It would be feasible to incorporate this, or indeed any of these processes, into digital mixing desks. though providing a good user interface is problematic. As to plug-ins, that depends on the demand and the power of computers. SARS Covid 2 is likely to slow progress on this dramatically. Ciao, Dave Hunt > On 25 Oct 2020, at 16:00, sursound-requ...@music.vt.edu wrote: > > From: Augustine Leudar <augustineleu...@gmail.com> > Subject: Re: [Sursound] Recorder for ORTF-3D OUTDOOR SET > Date: 25 October 2020 at 12:56:11 GMT > To: Surround Sound discussion group <sursound@music.vt.edu> > > > I think perhaps Stefan there is a language barrier or problem with > communication here ? > > Your exact words were ""*It is important to see that every position is > panned to 2 speakers in * > *2D, and (usually) 3 speakers in 3D.*" > You didn't refer to mono - but I did refer to "one" channel being spread > over several speakers sounding crap (or blurring spatialisation) to which > you replied this was wrong because its how millions of records were made - > - of course I believe you know what were stereo is and were referring to > panning one sound source (eg a trumpet) across two speakers as in > stereophonic panning - "one soundsource" being different to "one channel" > - thus the confusion? > Yes I know what VBAP is - I literally said it uses triangles in my last > post and that I've used it for 15 years, VBAP is great - I do mix it with > ambisonics sometimes though. > As for upmixing stereo to 5.1 - I agree with you about leaving the front > left and right intact if you *HAVE* to do it - all I was saying is upmixing > stereo to 5.1 is never going to be as good as actually having a 5.1 mix to > start with all six discrete channels created from the beginning uising a > surround sound panner .(yes I know about the LFE). > By the way - you work for Steinbergs marketing department right? If you are > the same Stefan - will you PLEASE try and get them to incorporate some kind > of DBAP (Distance Based Amplitude Panning) or similar into Nuendo? > Basically, it would be great if you could draw speaker maps/position the > speakers in the panner by dragging and dropping them to different positions > (so then you could use really irregular arrays). For example, if I wanted > to pan sounds corridors in a labyrinth or maze (which I have done before), > or have a circle within a circle etc etc this would be a great feature and > would definitely give it an edge over competitors like reaper. Ive been > told you can do this in Pyramix but never seen it - but I have to do it in > Max MSP at the moment or use Nuendos panners in ways they werent meant to > be used. It would also be handy to adjust the directivity of soundsources. _______________________________________________ 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.
