Digi XPress Specifications download pdf (Page 112)

DigiRack Plug-ins Guide106

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

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