Filter Type; Another View - E-Mu Ultraproteus Operation Manual

PRESET PROGRAMMING
ON SOME FILTERS, THE
FREQUENCY TRACKING
PARAMETER DOES NOT
CONTROL THE FILTER
FREQUENCY. SEE THE FILTER
DESCRIPTIONS IN THE
REFERENCE SECTION FOR
DETAILS.
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Another View

Another way to look at the Z-Plane filter is simply as a "black box". You don't
really need to think about all the possible filter permutations in order to use it.
You just need to know what the controls do and listen to the sound. Each
Z-Plane filter is described in the Reference Section of this manual.
Filter
Level
The Z-Plane filter can change its function in time.
Imagine a Lowpass filter transforming into a Bandpass filter. The Morph param-
eter (Morph Offset) typically handles this type of function.
Lowpass Filter Morphing into a Bandpass Filter
Frequency
The Morph and Transform 2 parameters vary in function from filter to filter.
About half of the Z-Plane filters are NOT cubes and therefore DO NOT use
Transform 2. The Frequency Tracking parameter usually controls the
frequency of the filters, moving peaks, shelves or notches up and down in
frequency. Refer to the Reference Section of this manual for specific informa-
tion on each filter.
Many of the filter types in UltraProteus are models of traditional acoustic
instruments such as electric piano or guitar. When an electric piano sample is
played through an electric piano filter, the harmonics of the sample can now be
controlled using the filter parameters.
Of course, you can put any instrument through the filter and the filter will
shape the basic character of the instrument. This "building-block" approach to
synthesis is only a part of what makes UltraProteus such a unique and powerful
synthesizer.
UltraProteus Operation Manual

Filter Type

Reverse
Morph Freq. Transform
Offset Track 2
Frequency Frequency