Filter Envelope - Rob Papen Predator User Manual

Type
- Bypass
The filter is bypassed and the sound passes through unaffected.
- 6dB LowPass
Low frequencies pass through this filter and frequencies above the Cutoff frequency are reduced by 6dB per
octave.
For example: a frequency 2000Hz is 6dB softer in volume if the Cutoff frequency is set to 1000Hz.
- 6dB HighPass
High frequencies pass through this filter and those below the Cutoff frequency are reduced by 6dB per
octave.
The filter is open if the Cutoff frequency knob is fully turned left.
-12dB LowPass
Low frequencies pass through this filter and those above the Cutoff frequency are reduced by 12dB per
octave.
- 12dB HighPass
High frequencies pass through this filter and those below the Cutoff frequency are reduced by 12dB per
octave.
The filter is fully open if the Cutoff frequency knob is fully turned left.
- 24dB LowPass
Low frequencies pass through this filter and those above the Cutoff frequency are reduced by 24dB per
octave.
-24dB HighPass
High frequencies pass through this filter and those below the Cutoff frequency are reduced by 24dB per
octave.
The filter is fully open if the Cutoff frequency knob is fully turned left.
Split 1
In this mode, Filter 1 and Filter 2 are in parallel, so that Filter 2 has the same properties, such as envelope,
filter tracking etc, as Filter 1.
The only difference is that Filter 2's frequency can be altered independently from Filter 1's.
Using Filter Pan in the advance screen, you can pan Filter 1 and Filter 2, from both being centered, to Filter 1
being panned left and Filter 2 being panned right.
Split 2
In this mode, Oscillator 1 goes into Filter 1, Oscillator 2 goes into Filter 2 and Oscillator 3 goes into both Filter
1 and 2. Filter 1 and Filter 2 are also in parallel and joined, so that Filter 2 has the same properties, such as
envelope, filter tracking etc, as Filter 1. The only difference is that Filter 2's frequency can be altered
independently from Filter 1's.
Using Filter Pan in the Advance screen, you can pan Filter 1 and Filter 2, from both being centered, to Filter
1 being panned left and Filter 2 being panned right.

Filter Envelope

The Filter Envelope is addressed to the main filter Cutoff Frequency of Predator and the amount is controlled
by the Env amount in the Filter section.
An envelope is a time based modulation inside a synthesizer. If you press a key it moves from 0% up to
100% and back to 0% when you release the key.
Between this you can adjust the time how it does do this.
The first part is know as the attack, this is the time it takes to reach 100%.
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