Freqshift
Frequency Shifting Effect
ADM04
Freqshift is a digital recreation of the analog frequency shifter
modules of decades long gone. Unlike more common pitch
shifters, which raise or lower the pitch of a sound by some ratio
(such as an octave or a fifth), frequency shifters add a specific
frequency ( 321Hz, for example) to the signal and all of its
harmonics. This alters the timbre of the sound in a manner
unlike other familiar effects processors. Freqshift replaces
complex analog circuitry with calibration-free digital
processing, delivering a frequency shifter in a compact, flexible,
but economically priced Eurorack module.
Control voltages present at the
jacks are added to the values set
with the knobs. Positive voltages
have the same effect as rotating
the corresponding knob
clockwise; negative voltages have
the same effect as rotating the
knob anti-clockwise.
The influences of the knobs and
their corresponding jack are
cumulative. For example, if you
turn a knob all the way clockwise
and apply -5V to the
corresponding jack, you’ll hear
the same thing as you would if
you left the knob at its center
position and didn’t plug anything
into the jack.
The useful range of voltage for the
CV jacks is ±5V.
The SHIFT knob changes the amount that the
signal's frequencies are raised or lowered.
Turning the knob clockwise from its center
position shifts the frequencies upward; turning
it anti-clockwise shifts them down. The
maximum amounts of shift are 6000Hz up,
1000Hz down.
The REGEN knob sends the shifted signal back
into the input of the module. Turning the knob
clockwise from its center position feeds the up-
shifted signal back into the input; turning it anti-
clockwise feeds the down-shifted signal back.
Note that this means that the module’s output
can be shifted upwards while a downward-
shifted signal is fed back, and vice versa.
MIX varies the amount of the original input
signal and the processed signal in the output. At
the center position you’ll hear only the input
signal. Turn the knob anti-clockwise and you’ll
hear the signal shifted in the direction set by the
SHIFT knob. Turn the knob clockwise and you’ll
hear signals shifted both upwards and
downwards.
The audio input signal goes in
here. The hardware will be
happiest if the signal level is
within ±7V.
This is the module’s output jack. Satisfactory
operation depends upon you plugging one
end of cable in here and the other end into
something else.
• A small amount of shifting creates tremolo or chorusing
effects. A large amount of shifting can transform the signal
into something quite unrecognizable.
• Freqshift can go just about anywhere in the signal path of
your patch. Its unusual effects merit experimentation.
That’s why you have a modular, right?
• In case you’re wondering about the asymmetric nature of
the SHIFT knob: if you shift frequencies far enough down
that they go below zero, you get the same result as an
upward shift. Limiting Freqshift’s downward shift provides
finer control over the most generally useful frequency
range.
Assembled in USA from US and foreign components.
Revision 1.0
©2013 Audio Damage, Inc.
www.audiodamage.com
KnobsControl-Voltage Jacks
Audio Input Jack Audio Output Jack
(1 Seiten)
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