Doepfer A-126 VC Frequency Shifter (no longer available) - Manual (Page 7)

doepfer System A - 100 VC Frequency Shifter A-126
7
Very interesting sound textures can result from a
combination of frequency shifting and frequency
modulation (see. fig. 5).
Just combining the two VCOs with frequency-shifting
and FM can produce a wide range of massive sounds,
and adding dynamic control of the frequency-shifting
by using an ADSR can make them even more inter-
esting. A whole new category of sounds is waiting to
be explored.
fig. 5: combining frequency-shifting and FM
By using a mixer module A-138b, and altering the
relative levels of the Up, Down and original signals, the
tonal possibilities of the frequency shifter can be ex-
panded still further.
fig. 6: mixing the Up, Down and original signals to
produce your chosen blend of sound
VCA
VCO 1
ADSR
VCFS
CV
Gate
VCO 2
Up
A-126
Audio Out
Up
Down
A-138 b