Operation Manual

ADOBE AUDITION 3.0
User Guide
169
Time and pitch manipulation effects
Pitch Bender effect (Edit View only)
The Time And Pitch > Pitch Bender effect varies the pitch of audio over time. Use the graph to draw a tempo and
create smooth tempo changes or other effects, like a vinyl record speeding up or slowing down.
See also
“About process effects” on page 104
“Apply individual effects in Edit View” on page 107
“Control effects settings with graphs” on page 104
“Use effect presets” on page 104
Pitch Bender options
Pitch graph Lets you draw a tempo change over time. The horizontal ruler (x-axis) represents duration, while the
vertical ruler (y-axis) represents pitch, measured in semitones or beats per minute, depending on the Range option.
Points above 0 speed up the sound, while points below 0 slow it down.
Zero Ends Sets the endpoints to no pitch shift. This option is useful if you want to pitch-bend the middle of a
selection, so that the endpoints are at the same rate as the surrounding audio.
Quality Level Controls the quality level. Higher quality levels produce the best sound, but they take longer to
process. Lower quality levels produce more unwanted harmonic distortion, but they take less time to process.
Usually, you won’t notice harmonic distortion for levels from Very Good and higher. Aliasing still occurs, however,
when you shift the pitch up, but the higher quality levels greatly reduce the distortion when you shift the pitch down.
Range Sets the scale of the vertical ruler (y-axis) as semitones (there are 12 semitones to an octave) or as beats per
minute. For a range in semitones, the pitch changes logarithmically, and you can specify the number of semitones to
shift up or down. For a range in beats per minute, the pitch changes linearly, and you must specify both a range and
a base tempo. You can specify the exact tempo of a selection to change to different rates, but this isn’t required.
Length report Lists what the new length of the file will be. Keep in mind that when decreasing the pitch, very long
files can occur, depending on the Range value.
Pitch Correction effect (Edit View only)
The Time And Pitch > Pitch Correction effect provides two ways to adjust the pitch adjustments of vocals or solo
instruments. Automatic mode analyzes the audio content and automatically corrects the pitch based on the key you
define, without making you analyze each note. Manual mode creates a pitch profile that you can adjust note-by-note.
You can even over-correct vocals to create robotic-sounding effects.
The Pitch Correction effect detects the pitch of the source audio and measures the periodic cycle of the waveform to
determine its pitch. The effect is most effective with audio that contains a periodic signal (that is, audio with one note
at a time, such as saxophone, violin, or vocal parts). Nonperiodic audio, or any audio with a high noise floor, can
disrupt the effect’s ability to detect the incoming pitch, resulting in incomplete pitch correction.