vbapz

vbapz — Writes a multi-channel audio signal to a ZAK array.

Description

Writes a multi-channel audio signal to a ZAK array.

Syntax

vbapz inumchnls, istartndx, asig, iazim [, ielev] [, ispread]

Initialization

inumchnls -- number of channels to write to the ZA array. Must be in the range 2 - 256.

istartndx -- first index or position in the ZA array to use

iazim -- azimuth angle of the virtual source

ielev (optional) -- elevation angle of the virtual source

ispread (optional) -- spreading of the virtual source (range 0 - 100). If value is zero, conventional amplitude panning is used. When ispread is increased, the number of loudspeakers used in panning increases. If value is 100, the sound is applied to all loudspeakers.

Performance

asig -- audio signal to be panned

The opcode vbapz is the multiple channel analog of the opcodes like vbap4, working on inumchnls and using a ZAK array for output.

[Warning] Warning

Please note that all vbap panning opcodes require the vbap system to be initialized using vbaplsinit.

Examples

See the entry for vbap8 for an example of usage of the vbap opcodes.

Reference

Ville Pulkki: “Virtual Sound Source Positioning Using Vector Base Amplitude PanningJournal of the Audio Engineering Society, 1997 June, Vol. 45/6, p. 456.

See Also

vbap16, vbap16move, vbap4, vbap4move, vbap8, vbap8move, vbaplsinit, vbapzmove

Credits

John ffitch
University of Bath/Codemist Ltd.
Bath, UK
May 2000

New in Csound Version 4.07