Copyright: Copyright © Twelve Tone Systems, Inc.


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FX Time/Pitch Stretcher

You can stretch the time and pitch of the selected audio independently. When you choose this command, you may specify the amount of time and pitch stretch in several ways:

•	By typing in value(s) into the Time and Pitch edit boxes.

•	By dragging the time/pitch track bars.

•	By dragging the crosshair in the time/pitch grid. Holding the Shift key down while dragging snaps the crosshairs to the nearest axis—X (time), Y (pitch), or the diagonal axis (equal-time-pitch).

Note that “diagonal” values can be processed very quickly and with very high quality, but have the trade-off that changing pitch will not preserve duration and vice-versa.

Tip: Choose low settings for Time and Pitch Stretch. It’s generally a good idea to transpose audio no more than a third or fourth.

Preset

Use this field to choose and enter presets. Click the Save button [image] to save any group of new settings after you enter a name in the Preset field. Click the Delete button [image] to delete any selected group from the Preset field.

Settings tab

Use these fields on the Settings tab for basic time and pitch editing:

•	Source Material—When you choose an audio type from the Source Material field, Cakewalk Pro Audio loads the Advanced settings that best suit the source audio.

•	Time—Time (%) lets you change the length of the audio event, from 50% to 200%. This can help you if you need to sustain a vocal take a little more, or tighten up a snare drum.

•	Pitch—The Pitch control can raise or lower the pitch by one octave (+/- 12 semitones.)

Advanced tab—see below

Audition

Click this button to hear the results of your effect on the first three seconds of the selected audio.

Mixing tab

You can create several kinds of output tracks by choosing options in the Mixing tab:

•	Process In-Place Mono Result—Choosing this option processes your selected track and puts the resulting mono track in the place of the original track.

•	Process In-Place Stereo Result— Choosing this option processes your selected track and puts the resulting stereo track in the place of the original track.

•	Create a Send Submix— Choosing this option processes your selected track and puts the resulting track in a new track that you choose in the Return Track drop-down menu. If you also click the Keep Original Data checkbox, Cakewalk leaves your input track  alone and creates a new, processed track in the location you chose.

See Also:

Time/Pitch Stretch | Advanced


Time/Pitch Stretch | Advanced

The first four options are special; they define how Time Stretch expands or shrinks the samples in an audio event.

Block Rate (Hz) defines the size of each sample that Time Stretch processes in the audio clip.

Overlap Ratio defines how much to overlap the samples in an event.

Crossfade Ratio sets a crossfade amount for the samples. Using values that are too high or low may cause unwanted flanging or chorusing in some sounds. Use higher crossfade values for long, sustained audio events, and lower values for sharp, percussive events.

There are two Accuracy options: Normal and High. Normal is good for most sounds. High Accuracy gives you slightly better quality, but takes longer to process.

Algorithm applies only to Pitch stretch, and is intended for vocals. Two algorithms are available: Normal and Formant-Preserving. Choosing normal means that pitch-shifted vocals will have a “chipmunk effect” — that is, they will lose the formant, or defining characteristic, of the original voice. By choosing the Formant-Preserving algorithm, you retain the voice’s properties. This helps vocals sound more natural and human when you pitch-shift them.

Preset

Use this field to choose and enter presets.

Audition

Click on this to hear the results of the command on the first three seconds of the selected audio.

See Also:

Time/Pitch Stretch