DigiDesign DigiRack, Manual

Page: 112 / 143

DigiRack Plug-ins Guide 106
Pitch Shift
The Pitch Shift plug-in adjusts the pitch of any
source audio file with or without a change in its
duration. This is a very powerful function that
transposes audio a full octave up or down in
pitch with or without altering playback speed.
Gain
Adjusts input level, in 10ths of a dB. Drag-
ging the slider to the right increases gain, drag-
ging to the left decreases gain.
Coarse and Fine
Adjusts amount of pitch shift.
The Coarse slider transposes in semitones (half
steps). The Fine slider transposes in cents (hun-
dredths of a semitone).
Time Correction
Disabling this option has the ef-
fect of “permanently varispeeding” your audio
file. The file’s duration will be compressed or ex-
tended according to the settings of the Coarse
and Fine pitch controls. When Time Correction
is enabled, fidelity can be affected. For example,
time expansion as a result of Time Correction
when lowering pitch can cause the audio to
sound granulated.
Ratio Adjusts the amount of transposition
(pitch change). Moving the slider to the right
raises the pitch of the processed file, while mov-
ing the slider to the left decreases its pitch.
Crossfade Use this to manually adjust crossfade
length in milliseconds to optimize performance
of the Pitch Shift plug-in according to the type
of audio material you are processing. This plug-
in achieves pitch transposition by processing
very small portions of the selected audio mate-
rial and very quickly crossfading between these
alterations in the waveform of the audio mate-
rial.
Crossfade length affects the amount of smooth-
ing performed on audio material. This prevents
audio artifacts such as clicks from occurring. In
general, smaller pitch transpositions require
longer crossfades; wider pitch transpositions re-
quire smaller crossfades. Long crossfade times
may over-smooth a signal and its transients.
This is may not be desirable on drums and other
material with sharp transients.
Use the Crossfade slider to adjust and optimize
crossfade times. For audio material with sharper
attack transients, use smaller crossfade times.
For audio material with softer attack transients,
use longer crossfade times.
Min Pitch Sets the lowest pitch used in the plug-
in’s Pitch Shift processing. The control has a
range of 40 Hz to 1000 Hz. Use it to focus the
Pitch Shift process according to the audio’s spec-
tral shape.
Use lower values when processing lower fre-
quency audio material. Use higher values when
processing higher frequency audio material.
Pitch Shift plug-in