> This brings the number of 3-D audio panning > systems up to four: > > DBAP -- Distance-Based Amplitude Panning > VDP -- Vector Distance Panning > VBAP -- Vector-Based Amplitide Panning > Ambisonics
And we could add: WFS - Wave Field Synthesis ViMiC - Virtual Microphone Technique AEP - Ambisonics Equivalent Panning > Are these all distinct techniques, or are some > of them different names for the same > technique? VDP and DBAP is based on the same idea, but DBAP as presented in the ICMC 2009 paper http://www.trondlossius.no/system/fileattachments/30/original/icmc2009-dbap.pdf has a number of additional features. The important difference of DBAP and ViMiC as compared to ambisonics and VBAP is that there are no restrictions on the positioning of loudspeakers or listener. Loudspeakers are not restricted to a ring/sphere surrounding the listener, but could e.g. be laid out as a regular or irregular grid in the space. This is what makes it useful for installations in one or more spaces, such as art galleries and museums, where rings and spheres of speakers might be impractical and the audience is free and expected to move about. An evaluation of DBAP in listening tests as compared to VBAP and Ambisonics is reported in this paper: D. Kostadinov, J. D. Reiss and V. Mladenov, "Evaluation of distance based amplitude panning for spatial audio", Proceedings of the IEEE International Conference on Acoustics, Speech, and Signal (ICASSP) , Dallas, March 2010 The DSP processing of ViMiC is more complex than matrix-based techniques such as DBAP, VBAP and ambisonics, as it uses filters and varying delays to emulate direction of sources and speakers (= virtual microphones), early reflections and room dampening. With propoer tuning of parameters ViMiC can be used to recreate several other spatialisation techniques, including DBAP. ViMiC is discussed extensively in the recent PhD thesis by Nils Peters: http://www.music.mcgill.ca/~nils/PetersThesis-web.pdf > Also, there is a Wikipedia article on > Ambisonics. Could I encourage people who > are familiar with the other techniques to create > Wikipedia articles on them. Yes, that would be useful. I'll see what I can do early next year. Do Wikipedia have any etiquette regarding whether you can (not) write up on subject areas that you have been a major contributor to? I know that wikipedia articles should not contain original research. Best, Trond _______________________________________________ Sursound mailing list [email protected] https://mail.music.vt.edu/mailman/listinfo/sursound
