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|Title: ||Categories of Perception for Vibrato, Flange, and Stereo Chorus|
|Authors: ||Martens, William|
|Issue Date: ||18-Apr-2012|
|Abstract: ||Vibrato, Flange, and Stereo Chorus are perhaps the three most often
used digital audio effects that are created by smoothly modulating
the duration of a delay line at typically sub-audio rates.
Common practice is to use a periodic or quasi-periodic modulation
control signal with frequency roughly between 2 and 9 Hz, and
both the rate and depth of delay modulation are typically adjusted
according to the aesthetic criteria of a performer or by an audio
production engineer. In order to establish norms for the musically
useful range of modulation rate and depth for such delay-based
effects, 25 listeners were asked to make categorical judgments regarding
their perception of vibrato, flange, and stereo chorus effects.
The results map out for these two modulation parameters
three perceptual regions for these three related effects: the region
in which modulation is too subtle for effective use, the parameter
ranges that seem most musically useful, and the region in which it
is too extreme for most musical applications. Of particular interest
is the observed commonality between these perceptual regions for
vibrato, flange, and stereo chorus effects.|
|Rights and Permissions: ||The author retains copyright of this work.|
|Appears in Collections:||Digital Audio Systems: Lab Report 1 (2012)|
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|Martens_Marui_dafx06.pdf||A DAFx paper (for your reading pleasure)||236.5 kB||Adobe PDF|
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