Choose Process > élastique Timestretch to time-stretch and pitch-shift audio while maintaining control over all stretching parameters.
After you open the élastique Timestretch dialog, you can choose a preset from the Preset drop-down list, or adjust the controls as desired.
Use the Time stretch controls to change the duration of your audio.
Use the Pitch shift controls to raise or lower the pitch of your audio.
Use the Formant shift controls to adjust the audio's fundamental harmonic frequency range. These controls are typically used to prevent the "chipmunk effect" in vocal performances.
To reset time and pitch stretching, double-click the point in the Pitch/Time graph:
If you want to move the point in the graph horizontally or vertically only, you can drag the horizontal or vertical grab bars.
Select the Synchronize pitch check box if you want the plug-in to transition smoothly as you adjust time and pitch stretching. This setting is useful if you want to adjust settings while previewing. If the check box is not selected, stretching will change abruptly if you adjust settings while previewing.
Choose a setting from the Mode drop-down list to choose the stretching method that is best suited to your source media:
Mode |
Description |
---|---|
Pro |
This mode provides the highest quality stretching for most applications but requires more RAM usage and CPU power. Formant shift controls are available only when using Pro mode. |
Efficient |
This mode provides good-quality stretching but uses fewer CPU resources. |
Soloist (Monophonic) |
This mode provides the highest quality stretching for monophonic audio sources. |
Soloist (Speech) |
This mode provides the highest quality stretching for monophonic speech signals. |
In the Time stretch group, the Original Time and Original Tempo boxes display the original length and tempo of your audio.
Drag the Ratio slider to the right to make your audio slower, or drag to the left to make the audio faster. You can stretch the audio from 1/10 to 10 times its original duration.
As you drag the Ratio slider, the New Time and New Tempo boxes are updated.
You can double-click the New Time and New Tempo boxes and type a new value.
If the original tempo of the clip is displayed incorrectly, you can double-click the Original Tempo box and type a new value.
Editing the Original Tempo value does not affect the original file data or attributes, but you can use the Original Time and Original Tempo values to autocalculate the desired time stretch ratio.
As you adjust the tempo, the gold point in the Pitch/Time graph is updated to reflect the modified clip length. You can also drag this point to adjust time and pitch shifting.
In the Pitch shift group, the Semitones and Cents sliders allow you to raise or lower the pitch of your audio up to two octaves.
Drag the Semitones slider for coarse control.
Drag the Cents slider for fine control.
You can also double-click the Semitones and Cents boxes and type a new value.
As you adjust the pitch, the gold point in the Pitch/Time graph is updated to reflect the modified clip pitch. You can also drag this point to adjust time and pitch shifting.
You can use the Formant shift controls to control whether the audio's fundamental harmonic frequency range is shifted along with the Pitch Shift value.
The Formant shift controls are available when Pro is selected from the Mode drop-down list.
As you adjust the pitch, the silver point in the Pitch/Time graph is updated to reflect the modified formant shift. You can also drag this point to adjust formant shifting.
The fundamental harmonic frequency range is specific to the instrument's or vocalist's resonating body (as opposed to the notes that are produced by that resonating body).
Drag the Formant shift slider to 0 (Preserve) if you do not want to pitch shift formants. When set to 100 (Match pitch), formants are shifted by the same amount as the Pitch shift setting.
Drag the Optimize for audio content max pitch slider to indicate which frequencies will be used as the format range. This slider is unavailable when the Formant shift slider is set to 100 (Match Pitch).