University of York Music Technology Group

York University Music Technology Group

VST Ambisonic Tools

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B-Zoom First Order Ambisonic B-format Zoom Control

Original code by Dave Malham with contibutions from the 2000-2001 Music Technology MA/MSc Software Engineering Group,

For use in multi-channel capable VST hosts such as Nuendo 1.5 (and above), AudioMulch, Max/MSP etc..

 

BFZoom screen shot

Usage:

B-Zoom is a 64-bit double precision ambisonics processor optimised for sound quality . In Nuendo, it should be used in the master effects section, positioned prior to the decoder, if this is in use.

Inputs:

Make sure your B-format signal is in W, X, Y, Z (1,2,3,4) format. Currently (as of June 2002) Nuendo and most other VST hosts do not offer a multichannel file input option so any B Format recordings have to be provided as two stereo files feeding separate input channels. Configure Nuendo so that these two channels feed the processor on these busses. BPan connects itself correctly automatically.

Useage:

B-Zoom allows you to zoom in on, or away from, a point on a complete first order B-Format soundfield. It has three controls, a pair of direction controls, Azimuth and Elevation, which allow you to set the point to which you will zoom (Azimuth in degrees anticlockwise from due front, elevation in degree from horizontal ( 90 degrees is straight up)) and a zoom control. This varies from no effect at the centre point, to zoomed fully towards the zoom point at +1 and zoomed fully towards the opposite direction at -1.0.

The effect of zooming in is to make sounds in that direction louder (and those in the opposite direction quieter) and also to spread the angles between them (and reduce the angular spread of sounds in the opposite direction)

Installation:

PC Windows

Simply drop the bfzoomedit.dll file into any plugin folder currently active in Nuendo or other VST software that you use, bur preferably the 'surround' one.

Macintosh

Simply put the bfzoomedit file into any plugin folder currently active in Nuendo or other VST software that you use, bur preferably the 'surround' one.

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Last updated on Wednesday July 3rd, 2002