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Slowing Down Audio with Time Stretch in SoundTrack Pro

Here's a great tutorial on how to slow down a person's dialogue without changing their pitch by using Final Cut Pro and Sound Track Pro's Time Stretch function.

You can continue reading for a full transcript of this tutorial.
You can use SoundTrack Pro to slow down a clip without changing it’s pitch. First, let me play the original clip. Next, let's slow it down.

Click on the speed tool within the tool palette. Grab the edge of the clip to extend its duration. This will slow down the clip with it's corresponding audio.

 If you play the clip, you'll notice the pitch has changed.

This time, I'm going to slow down just the video portion of the clip by holding down the option key while I extend it.

Right click on the clip and take note of it's new duration for the video portion. In this case it's 14:00.

Continue down the menu and select send-to Sound Track Pro audio file project.

Within SoundTrack Pro double click anywhere between these in and out points. Navigate to the process menu and select time stretch.

Within the dialogue box, change this pull down menu to drop frame timecode. Type in the new time value that matches the duration of your clip within Final Cut Pro.

Navigate to the file menu and select Save. Soundtrack Pro will create a new audio file that you need to save.

You can now go back to Final Cut Pro. Activate the selection tool. Hold down the option key to drag out the audio track to match the length of the clip on the video track.

Notice how the speed of the clip has changed without changing the audio pitch.

For other great tips and tricks like these, or to enroll in a Final Cut Pro training course, visit GeniusDV.com
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Flipper Plug-in for Final Cut Pro was the previous entry in this blog.

Understanding Dropped Frames in Final Cut Pro is the next entry in this blog.

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