applied-acoustics-systems ultra analog Manual Do Utilizador
4.5
The Noise Generator Module
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position notes depending on their pitch, low notes to the left and high notes to the right where the
middle C is the reference note positioned at the location determined by the Pan knob.
middle C is the reference note positioned at the location determined by the Pan knob.
4.5
The Noise Generator Module
The Noise module generates white noise and is followed by a -6dB/Oct low-pass
filter used to adjust the frequency content of the noise. The Color knob is used to
vary the cutoff frequency of the built-in low-pass filter. Turning this knob to the right
increases this frequency and therefore increases the high frequency content of the noise
until, in its rightmost position, the filter is fully opened. The F1/F2 knob controls
the amount of noise sent to the Filter 1 and Filter 2 modules. In its center position,
the same signal will be sent to both filters. Moving the knob counter-clockwise or
clockwise will send a greater amount of noise to either the Filter 1 or Filter 2 modules
respectively until when in its leftmost or rightmost position, signal is only sent to one
of the filters. Finally, the Level knob is used to adjust the overall level of the noise signal.
vary the cutoff frequency of the built-in low-pass filter. Turning this knob to the right
increases this frequency and therefore increases the high frequency content of the noise
until, in its rightmost position, the filter is fully opened. The F1/F2 knob controls
the amount of noise sent to the Filter 1 and Filter 2 modules. In its center position,
the same signal will be sent to both filters. Moving the knob counter-clockwise or
clockwise will send a greater amount of noise to either the Filter 1 or Filter 2 modules
respectively until when in its leftmost or rightmost position, signal is only sent to one
of the filters. Finally, the Level knob is used to adjust the overall level of the noise signal.
4.6
The LFO Module
The LFO module is used as a modulation source for the Oscil-
lator, Filter and Amplifier modules. On the LFO module, one can
adjust the waveform, the phase of the signal and fade-in behavior.
adjust the waveform, the phase of the signal and fade-in behavior.
4.6.1
Wave Shape
The waveform of the LFO is selected with the Shape drop-down
menu. The possible values are Sine for sinus, Tri for triangular, Rect
for rectangular and Rdm1 and Rdm2 for the two random modes. In
the case of the triangular and rectangular waves, the PW knob is used to control the symmetry
of the wave allowing you to go from a pulse to a square wave when a rectangular waveform is
selected and from a saw-tooth to a perfectly triangular wave for the triangular waveform. Note that
the PW knob has no effect on the Sine, Rdm1 and Rdm2 waveforms. When the Shape control is
set to Rdm1, the LFO outputs random values at the rate determined by the Sync control or the Rate
knob. In this case, the output value from the LFO remains constant until a new random value is
introduced. The Rdm2 mode reacts almost like the preceding mode except that the LFO module
outputs a ramp between each random value.
menu. The possible values are Sine for sinus, Tri for triangular, Rect
for rectangular and Rdm1 and Rdm2 for the two random modes. In
the case of the triangular and rectangular waves, the PW knob is used to control the symmetry
of the wave allowing you to go from a pulse to a square wave when a rectangular waveform is
selected and from a saw-tooth to a perfectly triangular wave for the triangular waveform. Note that
the PW knob has no effect on the Sine, Rdm1 and Rdm2 waveforms. When the Shape control is
set to Rdm1, the LFO outputs random values at the rate determined by the Sync control or the Rate
knob. In this case, the output value from the LFO remains constant until a new random value is
introduced. The Rdm2 mode reacts almost like the preceding mode except that the LFO module
outputs a ramp between each random value.
4.6.2
Rate
There are two ways for fixing the rate or frequency of the output of the LFO module. If the Sync
control is in its off position, the rate is set with the Rate knob. When the Sync control in on, the
control is in its off position, the rate is set with the Rate knob. When the Sync control in on, the