Moog Music 500 Series Analog Delay - Manual (Page 12)

12
KNOB BEHAVIOR: Selects between vertical and rotary knob scrolling.
MIDI PORT WARNING: Activates a warning when a MIDI port is unreachable.
LFO THEORY OF OPERATIONS
DELAY TIME AND PITCH SHIFTING
When you adjust the DELAY TIME control of the Analog Delay you are
actually changing the clock rate of an oscillator that determines how fast
signals go through the individual circuits in the Bucket Brigade Devices. If
you do this with an input signal present, echoes from the Delay Line will
be momentarily shifted in pitch. This creates a sound similar to the Dop-
pler Effect, with the delayed signal becoming stretched or compressed as
it goes through the Delay Line, thereby speeding up or slowing down the
vibrations and changing the pitch.
Note: Changing the 0.5x (short)/1.0x (long) switch position either halves
or doubles the DELAY TIME and thus compresses or stretches the delayed
signal currently in the Delay Line by a factor of two. This results in the pitch
of the delayed signal being shifted up or down one octave.
COMPLEX DELAY TIME MODULATIONS
The LFO acts like an invisible hand on the DELAY TIME control, creating
modulations (adjustments) of the length of time audio remains in the BBDs.
These modulations are based on the chosen
WAVEFORM, LFO RATE, and
AMOUNT.