Kurzweil k2500 Guia Do Utilizador
FX Algs #156-160: Phasers
Algorithm Reference-63
Response of typical phaser: (i) Wet/Dry = 50% and (ii) Wet/Dry = -50%.
Some of the phaser algorithms have feedback. When feedback is used, it can greatly exaggerate the peaks and
notches, producing a much more resonant sound.
notches, producing a much more resonant sound.
LFO Phaser is a simple phaser algorithm with Wet/Dry and Fdbk Level parameters. Two LFOs used to control the
filter frequency and the depth of the resulting notch. You can control the depths, rates, and phases of both the LFOs.
The algorithm is stereo so the relative phases of the LFOs for the left and right channels can be set. When setting the
LFO that controls the filter frequency, you specify the center frequency around which the LFO will modulate and
the depth of the LFO. The depth specifies how many cents (hundredths of a semitone) to move the filter frequency
up and down.
filter frequency and the depth of the resulting notch. You can control the depths, rates, and phases of both the LFOs.
The algorithm is stereo so the relative phases of the LFOs for the left and right channels can be set. When setting the
LFO that controls the filter frequency, you specify the center frequency around which the LFO will modulate and
the depth of the LFO. The depth specifies how many cents (hundredths of a semitone) to move the filter frequency
up and down.
The NotchDepth parameter provides an alternative way of combining wet and dry phaser signals to produce a
notch. In this case the parameter specifies the depth of the notch in decibels (dB). The depth of the notch can be
modulated with the notch LFO. The notch LFO is completely independent of the frequency, and their rates may be
different. The relative phases of the notch and frequency LFOs (N/F Phase) only has meaning when the LFOs are
running at the same rate. As with all KDFX LFO phases, it is not recommended to directly modulate the phase
settings with an FXMod.
notch. In this case the parameter specifies the depth of the notch in decibels (dB). The depth of the notch can be
modulated with the notch LFO. The notch LFO is completely independent of the frequency, and their rates may be
different. The relative phases of the notch and frequency LFOs (N/F Phase) only has meaning when the LFOs are
running at the same rate. As with all KDFX LFO phases, it is not recommended to directly modulate the phase
settings with an FXMod.
SingleLFO Phaser is identical to LFO Phaser except that the notch and frequency LFOs always run at the same rate.
Manual Phaser leaves the phaser motion up to you, so it has no built in LFOs. Manual Phaser has a Notch/BP
parameter which produces a complete notch at the center frequency when Wet/Dry is set to -100% and a resonant
bandpass when set to 100%. At 0% the signal is dry. To get phaser motion, you have to change the filter center
frequencies (left and right channels) yourself. The best way to do this is with an FXMod. There are also feedback
parameters for the left and right channels.
parameter which produces a complete notch at the center frequency when Wet/Dry is set to -100% and a resonant
bandpass when set to 100%. At 0% the signal is dry. To get phaser motion, you have to change the filter center
frequencies (left and right channels) yourself. The best way to do this is with an FXMod. There are also feedback
parameters for the left and right channels.
LFO Phaser Twin produces a pair of notches separated by a spectral peak. The center frequency parameter sets the
frequency of the center peak. Like LFO Phaser, the filter frequency can be modulated with a built in LFO. The
Notch/Dry parameter produces a pair of notches when set to 100%. The output signal is dry when set to 0% and at
200%, the signal is a pure (wet) allpass response. LFO Phaser Twin does not have Out Gain or feedback parameters.
frequency of the center peak. Like LFO Phaser, the filter frequency can be modulated with a built in LFO. The
Notch/Dry parameter produces a pair of notches when set to 100%. The output signal is dry when set to 0% and at
200%, the signal is a pure (wet) allpass response. LFO Phaser Twin does not have Out Gain or feedback parameters.
0 dB
-20
-40
Freq
10 Hz
100
1000
10k
0 dB
-20
-40
Freq
10 Hz
100
1000
10k
Gain
(i)
(ii)
Gain