Freq Shifter - E-Mu 404 Owner's Manual

Freq Shifter

This unusual effect is sometimes called "spectrum shifting" or "single sideband
modulation". Frequency shifting shifts every harmonic in the signal by a fixed number
of Hz which causes the harmonics to lose their normal relationship. The more common
pitch shifter, in contrast, preserves the harmonic relationships of the signal and so is
better suited to creating "musical" harmonies.
This isn't to say that the frequency shifter can't be used musically. Small intervals of
frequency shifting (1 Hz and below) can produce a wonderful, lush chorusing or
phasing effect. For bizarre frequency shifting effects, simply crank up the frequency
knob. Frequencies can be shifted up or down by any specified amount from .1 Hz to 24
kHz. You can also shift pitch up on one side and down on the other if you wish.
Comparison between Pitch and Frequency Shifting
Original
Harmonic
(Hz)
1 200
2 400
3 600
4 800
5 1000
6 1200
7 1400
8 1600
Parameter Description
Frequency Sets the number of Hz that will be added or subtracted with every
harmonic in the signal.
Left Direction Sets pitch shift up or down for the left channel.
Right Direction Sets pitch shift up or down for the right channel.
E-MU Digital Audio System
Pitch Shifted Frequency Shifted
(100 Hz) (100 Hz)
300
600
900
1200
1500
1800
2100
2400
300
500
700
900
1100
1300
1500
1700
5 - Effects
Core Effects Descriptions
f You can also type in
exact frequencies to a
resolution of 1/10 Hz.
45