96 lines
2 KiB
Text
96 lines
2 KiB
Text
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class:: PanAz
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summary:: Azimuth panner
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related:: Classes/Balance2, Classes/LinPan2, Classes/Pan2, Classes/Pan4
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categories:: UGens>Multichannel>Panners
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Description::
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Multichannel equal power panner.
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classmethods::
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method::ar, kr
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argument::numChans
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Number of output channels.
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argument::in
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The input signal.
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argument::pos
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pan position. Channels are evenly spaced over a cyclic period of
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2.0 in pos with 0.0 equal to channel zero and 2.0/numChans equal
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to channel 1, 4.0/numChans equal to channel 2, etc.
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Thus all channels will be cyclically panned through if a sawtooth
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wave from -1 to +1 is used to modulate the pos.
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argument::level
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A control rate level input.
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argument::width
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The width of the panning envelope. Nominally this is 2.0 which
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pans between pairs of adjacent speakers. Width values greater
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than two will spread the pan over greater numbers of speakers.
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Width values less than one will leave silent gaps between
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speakers.
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argument::orientation
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Should be zero if the front is a vertex of the polygon. The first
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speaker will be directly in front. Should be 0.5 if the front
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bisects a side of the polygon. Then the first speaker will be the
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one left of center.
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section::Comparison to Pan2
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Despite a certain similarity, link::Classes/Pan2:: and link::Classes/PanAz:: with 2 channels behave differently.
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code::
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// one full cycle for PanAz: from 0 to 1
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{ PanAz.ar(2, DC.ar(1), Line.ar(0, 1, 0.1)) }.plot(0.1)
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// one full cycle for Pan2: from -1 to 1 and back to -1
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{ Pan2.ar(DC.ar(1), EnvGen.kr(Env([-1, 1, -1], [0.05, 0.05]))) }.plot(0.1)
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// in other words, while Pan2 makes one full transition
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{ Pan2.ar(DC.ar(1), Line.ar(-1, 1, 0.1)) }.plot(0.1)
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// we need only a half one in PanAz:
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{ PanAz.ar(2, DC.ar(1), Line.ar(0, 1/2, 0.1)) }.plot(0.1)
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::
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Examples::
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code::
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// five channel circular panning
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s.boot;
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(
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{
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PanAz.ar(
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5, // numChans
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ClipNoise.ar, // in
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LFSaw.kr(MouseX.kr(0.2, 8, 'exponential')), // pos
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0.5, // level
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3 // width
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);
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}.play;
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s.scope;
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)
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::
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