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Table Of Contents
EFFECTS MENU 563
am-pulse continuously analyses the input signal by means of so-called “envelope followers”
that sample the time-based signal. At the attack and sustain phases there are multiple
envelope followers working which possess different attack and drop-out times. Attack and
sustain can be safely recognized by means of continuous comparison measurements.
Internally, am-pulse uses virtual VCAs (“voltage controlled amplifiers”) that generate a
control voltage from the resulting envelopes. You can use the fader to apply its value to the
attack and decay rate. This lets you either “multiply” the input signal by the control voltage
(increase controller) or “divide” the signal by the voltage (reduce controller).
Based on the principle of transient detection, the dynamic signals described above are
especially well-suited for for editing. The more percussive the audio signal, the cleaner and
more predictable the control.
Transient section parameters
There are three faders on the front plate for processing attack and sustain:
• Level (left channel): An increase takes place above the line; moving the fader in the
opposite direction reduces the level. The signal remains unaffected in the centre
position.
• Level (right channel): As above. Normally, both channel faders are coupled together by
default (as are the internal “detectors”). You can edit the channels separately by
depressing the button with the padlock symbol. The control voltages for both channels
are then determined separately.
• Length: This determines how long the signal is scanned and “held” in the respective
section. A lower value results only in a short amplification or reduction which sounds
quite electronic. Longer times mostly sound more homogenous.
Note: High "length" values in the "attack" phase are especially in danger of being battered
too strongly. The more complex the initial material, the more carefully “length” should be
adjusted.
Saturation and HF details section
As a creative tool am-pulse offers an adjustable saturation level and a high-frequency
details module.