alessandrostone / vbap Goto Github PK
View Code? Open in Web Editor NEWThis project forked from pd-externals/vbap
clone of the legacy "vbap" external (as distributed in Pd-extended)
License: Other
This project forked from pd-externals/vbap
clone of the legacy "vbap" external (as distributed in Pd-extended)
License: Other
A Pd port of the VBAP object for Max/MSP Written by Ville Pulkki Helsinki University of Technology Laboratory of acoustics and audio signal processing http://www.acoustics.hut.fi/research/cat/vbap/ This is a library for Pure Data for sound spatialization using the vector base amplitude panning (VBAP) method. VBAP is an amplitude panning method to position virtual sources in arbitrary 2-D or 3-D loudspeaker setups. In amplitude panning the same sound signal is applied to a number of loudspeakers with appropriate non-zero amplitudes. With 2-D setups VBAP is a reformulation of the existing pair-wise panning method. However, differing from earlier solutions it can be generalized for 3-D loudspeaker setups as a triplet-wise panning method. A sound signal is then applied to one, two, or three loudspeakers simultaneously. VBAP has certain advantages compared to earlier virtual source positioning methods in arbitrary layouts. Previous methods either used all loudspeakers to produce virtual sources, which results in some artefacts, or they used loudspeaker triplets with a non-generalizable 2-D user interface. The directional qualities of virtual sources generated with VBAP can be stated as follows. Directional coordinates used for this purpose are the angle between a position vector and the median plane (θcc), and the angle between a projection of a position vector to the median plane and frontal direction (Φcc). The perceived θcc direction of a virtual source coincides well with the VBAP panning direction when a loudspeaker set is near the median plane. When the loudspeaker set is moved towards a side of a listener, the perceived θcc direction is biased towards the median plane. The perceived Φcc direction of an amplitude-panned virtual source is individual and cannot be predicted with any panning law.
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