Oberheim TEO-5 - Page 35

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About the Filter Envelope
Oberheim
To hear the effect of the Filter Envelope:
1. Recall the Basic Program by holding the transpose down button then
pressing the low split -2 button.
1. Hold down a note and rotate the lter’s cutoff knob to set it to an
8 o’clock position.
2. Play a note. At this point you may not hear anything because you’ve
closed the lter signicantly.
3. In the Envelopes section, turn the amount knob of Env 1 (which is
routed to the Filter by default) to a 3 o’clock position.
4. Play a note. Notice how the sound has changed. The Filter Envelope is
controlling lter cutoff by the amount you set with the amount knob.
5. Repeatedly strike a note on the keyboard as you turn the Filter Enve-
lope’s decay knob clockwise and counterclockwise. Notice how it
changes the sound as the note decays faster or slower after its initial
attack stage.
6. Now experiment with the Filter Envelope’s attack knob. Notice how
the attack becomes faster or slower.
7. Now hold down a note and experiment with the Filter Envelope’s
sustain knob. This controls how wide the lter stays open while you
hold down a key on the keyboard.
8. The Filter Envelope’s release parameter acts in conjunction with the
Amplier Envelope (Envelope 2 by default), so to hear its effect, rst
set the Amp Envelope’s release value to a 1 o’clock position.
9. Now repeatedly strike a note on the keyboard as you turn the Filter
Envelope’s release knob clockwise and counterclockwise. Notice how
the note fades out faster or slower as you change the release value.
10. Continue experimenting with various Filter Envelope settings while
you adjust Envelope 1’s amount knob. Notice how greater amount
settings amplify the effect of the envelope on the lter.
As noted above, the Filter Envelope and Amplier Envelope often work
in conjunction, with the Filter Envelope controlling how the lter opens
and closes and the Amplier Envelope controlling how the Amplier
controls the overall volume shape of the sounds you create. Note that in
filter + amp routing mode, Envelope 2 controls the lter and the amp
simultaneously.To learn more about the Amplier Envelope, see “About
the Amp Envelope” on page 28.