applied-acoustics-systems ultra analog Manuel D’Utilisation
4.9
The Portamento Module
37
4.8.3
Unison
The unison mode allows one to stack voices or in other words, play two or four voices for each note
played on the keyboard. This mode creates the impression that several instruments are playing the
same note together adding depth to the sound.
played on the keyboard. This mode creates the impression that several instruments are playing the
same note together adding depth to the sound.
Each voice can be slightly detuned up or down relative to the others by moving the Detune
knob counter-clockwise and clockwise respectively from its center position. Furthermore, voices
can be desynchronized by adding a small time lag between their triggering with the Delay knob.
This delay is nil when the knob is in its leftmost position and increased by turning it clockwise.
can be desynchronized by adding a small time lag between their triggering with the Delay knob.
This delay is nil when the knob is in its leftmost position and increased by turning it clockwise.
4.9
The Portamento Module
The portamento effect is used to make the pitch slide between notes
rather than changing immediately from note to note. The Time knob sets
the amount of time it will take for the pitch to slide over one octave. The
Mode drop-down menu enables one to choose between the constant or
proportional mode. When in constant mode, the time necessary for the
pitch to slide from one note to another will always be the same regardless of the interval between
the notes. When set to proportional, the slide time will be proportional to the width of the interval
between the two notes. When the portamento is on, the slide effect occurs between every note.
the amount of time it will take for the pitch to slide over one octave. The
Mode drop-down menu enables one to choose between the constant or
proportional mode. When in constant mode, the time necessary for the
pitch to slide from one note to another will always be the same regardless of the interval between
the notes. When set to proportional, the slide time will be proportional to the width of the interval
between the two notes. When the portamento is on, the slide effect occurs between every note.
Clicking on the Legato button will switch the module into legato mode and the sliding between
two notes will only occur if the second note is played before the first one is released. When a note is
played staccato, or in other words if a key is released before the next one is depressed, there will be
no portamento effect. Note that even though the portamento effect is available when the Keyboard
module is in polyphonic mode, it is mostly dedicated to monophonic playing. In polyphonic mode,
the sames rules will apply to individual voices and the overall result will be less predictable.
played staccato, or in other words if a key is released before the next one is depressed, there will be
no portamento effect. Note that even though the portamento effect is available when the Keyboard
module is in polyphonic mode, it is mostly dedicated to monophonic playing. In polyphonic mode,
the sames rules will apply to individual voices and the overall result will be less predictable.
4.10
The Vibrato Module
The vibrato effect is equivalent to a periodic low frequency pitch
modulation. This effect is generally obtained by using an LFO to modu-
late the pitch signal of an oscillator. In Ultra Analog, a dedicated module
is provided for this effect. The vibrato module is hard wired and affects
the pitch of both oscillators.
late the pitch signal of an oscillator. In Ultra Analog, a dedicated module
is provided for this effect. The vibrato module is hard wired and affects
the pitch of both oscillators.
The Rate knob sets the frequency of the vibrato effect from 0.5 Hz to
5 Hz. The Amount knob sets the depth of the effect, or in other words the
amplitude of the frequency variations. In its leftmost position, there is no vibrato and turning the
knob clockwise increases the amount of pitch variation. The Mod gain knob is used to determine
the effect of the keyboard modulation wheel on the depth of the vibrato. When this knob is fully
turned to the left, the modulation wheel has no effect but when it is turned clockwise the depth of
amplitude of the frequency variations. In its leftmost position, there is no vibrato and turning the
knob clockwise increases the amount of pitch variation. The Mod gain knob is used to determine
the effect of the keyboard modulation wheel on the depth of the vibrato. When this knob is fully
turned to the left, the modulation wheel has no effect but when it is turned clockwise the depth of