69 lines
3.0 KiB
Markdown
69 lines
3.0 KiB
Markdown
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title = "Stretching & shrinking regions"
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description = "Stretching and shrinking regions in Ardour"
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chapter = false
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weight = 9
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+++
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Regions can be stretched or shrunk in length without changing their pitch by
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using the _Stretch/Shrink Regions_ tool (**T** shortcut, for "Time-stretch").
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{{< figure src="en/ardour7-stretch-shrink-edit-mode.png" alt="Stretch/Shrink Regions tool" >}}
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A small adjustment to the length of a region may not cause noticeable sound
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_artifacts_. However, the more extreme the change in length, the more obvious
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the effect of processing on the sound.
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To use _Stretch/Shrink Regions_, place your cursor on top of the region, and
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then click-drag left or right. While dragging, you will see a highlighted area
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which represents the new duration to which the region will be shrunk or
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stretched when you release the mouse at the current position. Ardour will also
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display the new duration of the region next to the highlighted area in units of
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the primary clock.
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{{< figure src="en/ardour7-stretch-shrink-highlight.png" alt="Stretching highlight" >}}
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## Time-Stretching a Region to Fit the Loop
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In the image below, we've added another sound sample—this time, a [synthesizer
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line from freesound.org](https://freesound.org/people/walkerbelm/sounds/1168/)
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to the rhythmic passage we composed in the _Creating Looped Sections_ chapter.
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After importing this synth line, you will see that the length of the new region
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doesn't match the existing rhythm we've already created. It's too long to be one
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bar and too short to be two bars. More importantly, while the first note matches
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the beginning of the kick drum's sound above, the second note is clearly
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off-beat.
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{{< figure src="en/ardour7-stretch-shrink-1.png" alt="Non-matching regions" >}}
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We can correct this by using the _Stretch/Shrink_ tool. Select the region you
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wish to stretch, switch to the tool, click on the right side of the region, then
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drag the cursor until the newly created highlight area matches the new length,
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that is, all the way to the second bar (again assisted by the _Grid_ settings).
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{{< figure src="en/ardour7-stretch-shrink-action.png" alt="Stretching" >}}
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When you release the mouse button, the _Time Stretch Audio_ dialog appears. You
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can experiment with different settings for the _Time Stretch_ operation. Each
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will affect the sound in a different way. It's a good idea to try different
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stretch settings to find out which one gives you the result you're most happy
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with.
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{{< figure src="en/ardour7-stretch-shrink-2.png" alt="Time Stretch Audio dialog" >}}
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Click **Stretch/Shrink** in the _Time Stretch Audio_ dialog to start the
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operation.
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When the operation is complete, the region of the synthesizer line will now be
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exactly two bars long and should fit in with the rhythm we already created with
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the drum samples.
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{{< figure src="en/ardour7-stretch-shrink-3.png" alt="Stretched audio region" >}}
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## Continuing
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Now let's talk about editing MIDI regions.
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Next: [EDITING MIDI REGIONS](../editing-midi-regions/)
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