106
E-MU Systems
Edit Menu
Filter Envelope
Filter Parameters
The Freq and Q parameters control various elements of the filter depending
on the type of filter used. See the table in the Filter Types section for details
about what the Freq and Q fields control in each filter.
Filter Envelope
The Filter Envelope is normally used to control the filter frequency and has
six stages. Unlike the Volume Envelope, the Filter Envelope must be
patched to the Filter Frequency using a PatchCord. In this respect, it can be
thought of as a general purpose envelope generator which is normally
patched to control the filter. The Filter Envelope Levels can be negative as
well as positive.
There are three mode options:
•
Time-based
: Defines the Filter Envelope rates from 0 to 127 (approxi-
mately 1 ms to 160 seconds). The Master clock has no affect on time-
based rates.
•
Tempo-based:
The Filter Envelope times vary based on the master tempo
setting and are displayed in values such as 1, 2, 3, etc. Note values are
displayed instead of a number when the time corresponds to an exact
note value. Tempo-based envelopes are useful when using arpeggiators
and sequencers because the envelope rates compress and expand accord-
ing to the Master Tempo setting, keeping the envelopes in sync with the
music. See the illustration on page 58.
L1
FILTER
Freq: 255 Q: 019
L1
FILT ENV RATE LEVEL
Attack 1 84 100%
L1
FILT ENV RATE LEVEL
Attack 1 1/4 100%
Summary of Contents for B-3
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