User Manual

NOTE AND AUTOMATION EDITING
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About tempo changes and tempo automation of audio tracks
The built-in Stretch function allows you to change the tempo of the song without affecting the pitch of the recordings
on the audio tracks. This is great if you want to adjust the tempo after you have recorded your audio tracks. In Rea-
son, the Stretch is enabled by default for all audio clips.
! The Stretch function also affects the sonic result when transposing audio clips using the Transpose function
(see “Transposing Audio Clips”).
There are three selectable Stretch and Transpose Type algorithms which are suitable for playing back different types
of audio material:
• The “Allround” Stretch and Transpose Type is suited for most types of polyphonic audio material.
• The “Melody” Stretch and Transpose Type is best suited for sources sounding one note at a time e.g. solo in-
struments.
• The “Vocal” Stretch and Transpose Type is best suited for stretched and/or transposed vocal material.
In the “Vocal” Stretch and Transpose Type the formants of the original vocal are preserved, which prevents the vo-
cal from sounding artificial when transposed and/or stretched.
D Select “Stretch and Transpose Type” from the Audio Track context menu or from the Edit menu.
Stretch preview vs. high quality stretch
Stretch and transposition of audio are always made in two parallel steps: a real-time “preview” so that you can in-
stantly hear the result of your tempo changes or transpositions, and a high quality stretch “in the background” to fur-
ther improve the sonic results. As soon as high quality stretch is in progress, the “Calc” indicator on the Transport
Panel shows a progress indicator:
The CALC indicator appears when Reason performs high quality stretching of audio.
Since the high quality stretch is performed in the background, you can still continue to work with your song without
any interruption. When the high quality stretch is finished, the “Calc” indicator goes out and the high quality audio au-
tomatically replaces the “preview” audio.
About disabling Stretch for audio clips
In some situations, you might want to exclude audio clips from tempo automation. For example, if you have recorded
dialogue or sound effects that shouldn't adapt to tempo changes. In such situations, you can select the audio clip(s)
you want to exclude from the tempo changes and select “Disable Stretch” from the Edit menu or clip context menu.
! Note that disabling stretch does not affect the Transpose function for audio clips!