User Manual

CHAPTER
911
81 Transposing Audio
OVERVIEW
Pitch Shifting mode. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 911
Pitch automation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 912
Using the Transpose command . . . . . . . . . . . . . . . . . . . . . 919
Transposing audio and MIDI together . . . . . . . . . . . . . . 920
Temporarily disabling pitch modifications. . . . . . . . . . 920
Converting audio pitch to MIDI data. . . . . . . . . . . . . . . . 920
Formant-corrected vs. standard pitch shifting . . . . . . 921
ZTX processing preferences . . . . . . . . . . . . . . . . . . . . . . . . 921
Background processing. . . . . . . . . . . . . . . . . . . . . . . . . . . . . 921
PITCH SHIFTING MODE
When transposing audio in Digital Performer,
there are four possible modes to choose from:
■ ZTX Formant-Corrected
■ ZTX Standard
■ PureDSP Solo Vocal
■ No Pitch Shift
The Pitch shifting mode is chosen in a menu on the
soundbite title bar (Figure 81-1) or in the Sound
File Information pane (Figure 37-23 on page 350).
Each soundbite can be assigned its own mode. You
can also access this menu by right-clicking on the
soundbite. To assign multiple soundbites to the
same setting at one time, select them and then do
one of the following:
■ press option/alt while accessing the pitch-shift
mode menu (Figure 81-1) on one of the selected
bites, or
■ press option/alt while right-clicking one of the
selected bites (in any edit layer).
Alternately, select them in the Soundbite list or
Sequence Editor and change their setting in the
Sound File Info pane (Figure 37-23 on page 350).
Figure 81-1: Choosing the pitch-shifting mode for a soundbite.
ZTX Formant-Corrected
Formant-corrected pitch shifting preserves the
original character of the sound by separately
transposing the pitch and formants (resonant
frequencies) by different amounts. This type of
pitch shifting avoids the classic “sampler” effect.
For example, vocals transposed up will not get the
“chipmunk” effect or, when transposed down, the
“Darth Vader” effect. Instead, the quality remains
the same and just sounds higher or lower. The
advantage of formant-corrected shifting is that
results are more true to the original audio’s tone or
timbre.
ZTX formant-corrected pitch shifting works well
on just about any material, including polyphonic
material, such as keyboard tracks, and even full
mixes.
Choose the pitch edit
layer to expose this
pitch mode menu.
Pitch shifting mode
ZTX quality setting