KDFX Reference
KDFX Algorithm Specifications
10-103
For the rotating speakers, you can control the cross-over frequency of the high and low frequency bands
(the frequency where the high and low frequencies get separated). The rotating speakers for the high and
low frequencies have their own controls. For both, the rotation rate, the effective driver size and tremolo
can be set. The rotation rate of course sets how fast the rotating speaker is spinning. The effective driver
size is the radius of the path followed by the speaker relative to its center of rotation. This parameter is
used to calculate the resulting Doppler shift of the moving speaker. Doppler shift is the pitch shift that
occurs when a sound source moves toward or away from you the listener. In a rotating speaker, the
Doppler shift will sound like vibrato. As well as Doppler shift, there will be some acoustic shadowing as
the speaker is alternately pointed away from you and toward you. The shadowing is simulated with a
tremolo over which you can control the tremolo depth.
You can control resonant modes within the rotating speaker cabinet with the Lo and Hi Resonate
parameters. For a realistic rotating speaker, the resonance level and delay excursion should be set quite
low. High levels will give wild pitch shifting.
Parameters
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In/Out When set to ÒInÓ, the algorithm is active; when set to ÒOffÓ the algorithm is bypassed.
Out Gain The overall gain or amplitude at the output of the effect. For distortion, it is often
necessary to turn the output gain down as the distortion drive is turned up.
Dist Drive Applies a boost to the input signal to overdrive the distortion algorithm. When
overdriven, the distortion algorithm will soft-clip the signal. Since distortion drive will
make your signal very loud, you may have to reduce the Out Gain as the drive is
increased. [VibChor+Rotor 4 only]
DistWarmth A lowpass Þlter in the distortion control path. This Þlter may be used to reduce some of
the harshness of some distortion settings without reducing the bandwidth of the signal.
[VibChor+Rotor 4 only]
In/Out In or Out Out Gain Off, -79.0 to 24.0 dB
Cabinet HP 16 to 25088 Hz Dist Drive 0 to 96 dB
Cabinet LP 16 to 25088 Hz DistWarmth 16 to 25088 Hz
Xover 16 to 25088 Hz Mic Angle 0.0 to 360.0 deg
Lo Gain Off, -79.0 to 24.0 dB Hi Gain Off, -79.0 to 24.0 dB
Lo Rate -10.00 to 10.00 Hz Hi Rate -10.00 to 10.00 Hz
Lo Size 0 to 250 mm Hi Size 0 to 250 mm
Lo Trem 0 to 100% Hi Trem 0 to 100%
ResH/LPhs 0.0 to 360.0 deg
LoResonate 0 to 100% HiResonate 0 to 100%
Lo Res Dly 10 to 2550 samp Hi Res Dly 10 to 2550 samp
LoResXcurs 0 to 510 samp HiResXcurs 0 to 510 samp
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