Audio Units for Mac OS X
GWS RanPan
This is a random pan effect, which can be linked to tempo. I couldn't find an effect that did this when I
wanted to apply it to my own music project, so I whipped it up
myself. Now any audio application that hosts Audio Units can take advantage of this plugin to randomly pan
sound around in sync with the beat!
Version 2.7 adds a custom Cocoa user interface. In addition, the maximum value for the ”Beats“
parameter has been increased from 4.0 to 8.0. Additionally, it is built to support Intel-based Macintosh systems.
Please note that the Cocoa view did not resize correctly in Logic 7.1; this was an issue with Logic's
support of Cocoa views, and
was corrected in Logic 7.2. Resizing should work without a problem in GarageBand and other AU
hosts that support Cocoa views.
For more information, see "GWS
RanPan Read Me" in the zipped disk image file.
Four different behaviors are available:
- Random Pan (Tempo)
- Audio is panned among the output channels at random in sync with a beat or fractional beat. This is the
effect that I was really trying to accomplish; the others were incidental.
- Random Hard Pan (Tempo)
- Audio is randomly panned hard left or hard right (or, exclusively to one of M output channels), in sync
with a beat or fractional beat.
- Independent Random Gain (Tempo)
- The gain of each channel is reduced by a random amount, in sync with a beat or fractional beat.
Note: the 'Invert (Rand Gain)' parameter will cause the random value to be squared and subtracted
from 1.0.
- Independent Random Gain (Total)
- The gain of each set of frames received for processing is reduced by a random amount. Each channel is
treated independently.
Note: the 'Invert (Rand Gain)' parameter will cause the random value to be squared and subtracted
from 1.0.
 GWS RanPan is a Universal Binary, and is compatible with Mac OS X 10.5 Leopard.
GWSRanPan_2.7.dmg (2.7.9, 2005-Dec-20,370 KB )
Here also is a link to the previous version, if you need it for some reason (PPC only):
GWSRanPan_2.5.dmg (2.5.0, 2005-Jun-13,119 KB )
To install, unzip and drop the component into ~/Library/Audio/Plug-Ins/Components (the
effect will be available only to that user) or into the root /Library/Audio/Plug-Ins/Components folder (to
make it available to all users of the computer).
This effect has been most recently tested in Mac OS X 10.4 with the latest version of Logic and AU Lab, on
both PPC and Intel systems.
It should do something with
N–>M channels up to 2–>5, although I haven't listened to anything beyond 1–>2 and
2–>2.
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