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System a - 100, A-170, Doepfer – Doepfer A-100(~ 40 MB) User Manual

Page 573: Dual slew limiter, Slew limiter as ar envelope generator, Glissando am

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doepfer

System A - 100

Dual Slew Limiter

A-170

5

Slew limiter as AR envelope generator

You can use the lower A-170 as a simple AR enve-
lope generator, for instance in the example in Fig. 4,
to help create a certain percussive bass sound.

Fig. 3: The A-170 as a simple AR generator

“Glissando AM”

The patch in Fig. 4. produces an interesting sound.
The two VCOs are set to harmonically related inter-
vals. A keyboard pitch control voltage is patched to
both VCOs - directly to VCO1 (the carrier), and via the
A-170 upper slew limiter to VCO2 - the modulator.

When a new note is played, the carrier VCO reacts
immediately, while the modulator VCO glides gra-
dually to the pitch of the note, producing a complex
timbral sweep.

Fig. 4: "Glissando AM"

H

It’s important to keep the time level of the
A-170 less than the shortest note length
played.

CV

Gat e

V CO

V CF

A-170

A-170

V CA

CV

V CA 1

V CA 2

A-170

V CO 1

V CO 2

A DSR

Gat e

upper SL