Turn2On HarmBode User manual

Introducing a variation of a legendary analog
frequency shifter. HARMBODE shifts the spectrum of
a signal by a fixed amount. BODE (TM) Shifter is not
a pitch-shitfer, but allows you to shift inharmonics in
Hz. Sometimes it can sound like a ring modulator
effect, but with HARMBODE it is possible to get an
upshifted and downshifted signal. With some
settings you can hear the effect known as
"Barberpole flanger" as well as a 90 degree phase
shifter.
The original analog Bode 735 Freq Shifter (TM) was
designed by Harold Bode in the 1960’s and was also
used in the Moog (TM) modular system.
HARMBODE attempts to reproduce this Bode freq
shifter (TM) in Reason Rack Extension format.
Today Freq shifters popular in world of guitar pedals
and modular synths, in world of software synths and
FXs.
Try the legendary freq shifter in your Reason rack
today!
Visit us:
turn2on.com
HarmBode
Frequency Shifter
[RACK EXTENSION] v. 1.0
MANUAL
2018
FX device by Turn2on Software
* All product names, trademarks and registered trademarks are property of their respective owners. All company,
product and service names used are for identification purposes only. Use of these names, trademarks and brands does
not imply endorsement.

THEORY OF BODE FQ SHIFTER
Pitch shifting uses delay with the clock on the output shifted up or down to change the frequency of the
notes you're playing.
A frequency shifter is basically one half of a ring modulator. !
While a ring modulator takes an input signal and a modulation signal and produces the sum and difference
frequencies, a frequency shifter produces only the sum frequencies, or the different frequencies. It outputs
these separate frequencies and invoques fancy filtering.
When you turn up controls, you can get glissandos, barberpole flanging, or soft echos that seem to rotate
around you.
Some refer to this effect as a ring-modulator, but it is not true. Its Bode Frequency shifter with Hilbert
transformation effect (rotate copy of signal to 90 degrees). Frequency shifters can sound like bells because
they shift inharmonics, which sounds exactly like ring modulation. In technical language it is known as single-
sideband modulation.
It is arguably one of the most underrated and ignored effects in the industry.
If you blend a slightly shifted signal with the original signal you can get some phasing. The harmonic
structure of the dry signal with the processed signal can sound as an inharmonic effect, much like a bell.
Freq shifters shifts up all frequency content up by the same amount, thus altering the frequency
relationships. As example, the 100 Hz tone go up to 200 Hz, and the 200Hz tone go up to 300 Hz instead.
HARMBODE frequency shifter can shift all of the frequencies of the input signal with up, down, up/down,
and down/up modes. These modes create dissonance to the incoming signal, breaking harmonic structure.
With frequency shifters it is possible to touch on other aspects of Phaser effects.
With variations of small and big shifts, it can break the harmonics of many instruments, but with many
percussion style sounds, a frequency shifter can change the tone and the effect can be very musical.
Small shifts gave deep phasing effects, larger shifts with notes changes is break harmonic structure and
create dissonance. Intresting to know the history - originally freq shifters was help to reduce mic feedbacks
in halls.
The effect uses a Hilbert Transform, that contains 2 seperate channels - Real and Imaginary. Real and Imag
are summed after the Frequency Shifter block where they are mixed with the dry signal.
Note: Ring modulation is equivalent to double-sideband suppressed-carrier modulation, whereas a
frequency shifter is equivalent to single-sideband modulation.
INPUT
Hilbert
Transform
Filter
REAL
IMAG 90
degree
FreqShifter
MIX
OUTPUT
FEEDBACK
- SCALE!
- SHIFT
DRY

BYPASS - disable effect
ON - enable effect
OFF - mute incoming signal
MAIN PARAMETERS
MODE
UP - Shift frequencies upward
DOWN - Shift frequncies downward,
UP/DOWN - combination of Upward and Downward shift frequencies
DOWN/UP - combination of Downward and Upward shift frequencies
* Or left and right channels shift in opposite directions
SCALE
Frequency shift in Hertz (not pitch shifting!).
Low values result in BARBER's pole phasing when BLEND is set to 50%.
SHIFT
Linear scaling of shift amount with gradation. Can be inverted.
FDBK
Feedback adds overtones or increases SHIFT (depth) of phasing.
BLEND
Mix of incoming and processed signal
Soft Bypass / Input Otput Corrections
ACT / SOFT BYP
Enable / Bypass HARMBODE effect. Soft bypass variant
INPUT
Amp gain correction of the dry input level (unprocessed
input signal) before it goes to the BLEND (Dry/Wet)
control
OUTPUT
Amp gain correction of the output level of the processed
signal after it leaves the BLEND (Dry/Wet) control
AUDIO INPUT/OUTPUT !
Mono or Stereo connections for audio signals.
CV INPUTS!
Use these CV inputs to control the main parameters
with external CV source curves.
BACK SIDE PANEL

HARMBODE!
Inharmonic Bode FQ Shifter
Turn2on!
Rack Extension Developer
contacts: https://turn2on.com/!
[email protected]
Special thanks to all beta-testers