Specifications
Chapter 5: DigiRack Real-Time TDM and RTAS Plug-Ins 53
Pitch
(TDM Systems Only)
The Pitch plug-in is designed for a variety of au-
dio production applications ranging from pitch
correction of musical material to sound design.
Pitch processing uses the technique of varying
sample playback rate to achieve pitch transposi-
tion. Because changing audio sample playback
rate results in the digital equivalent of vari-
speeding with tape, this is an unsatisfactory
method since it changes the overall duration of
the material.
Pitch transposition with the Pitch plug-in in-
volves a much more complex technique: digi-
tally adding or subtracting portions of the audio
waveform itself, while using de-glitching cross-
fades to minimize undesirable artifacts. The re-
sult is a processed signal that is transposed in
pitch, but still retains the same overall length as
the original, unprocessed signal.
Pitch Controls
Input Level Attenuates the input level of the
Pitch plug-in to help prevent internal clipping.
Signal Present Indicator LED Indicates the pres-
ence of an input signal.
Clip Indicator Indicates whether clipping has oc-
curred on output. It is a Clip-Hold Indicator. If
clipping occurs at any time, the clip light will re-
main on. To clear the Clip Indicator, click it.
Long delay times and high feedback times in-
crease the likelihood of clipping.
Mix Adjusts the ratio of dry signal to effected sig-
nal in the output. In general, this control should
be set to 100% wet, unless you are using the
Pitch plug-in in-line on an Insert for an individ-
ual track or element in a mix. This control can
be adjusted over its entire range with little or no
change in output level.
Delay Sets the delay time between the original
signal and the pitch-shifted signal. It has a max-
imum setting of 125 milliseconds. You can use
the Delay control in conjunction with the Feed-
back control to generate a single pitch-shifted
echo, or a series of echoes that climb in pitch.
Feedback Controls the amount and type of feed-
back (positive or negative) applied from the out-
put of the delay portion of the Pitch plug-in
back into its input. It also controls the number
Pitch plug-in
The Pitch plug-in was formerly called
DPP-1. It is fully compatible with all set-
tings and presets created for DPP-1.