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There are may be times when your audio clip is longer than you want it to be. Maybe you only want to use a segment in the middle. You don't have to open the clip in the sound editing program; you can make the trim right inside PowerPoint. It's a good idea to keep you multimedia focused on material that supports the specific point you are making and trim out extraneous material from the beginning or end. I'm on slide 3 in my presentation. You can use any sound clip you've embedded. Do note that this technique works on both embedded and linked media, but the only audio clips that you've actually embedded will receive the benefits of the optimization tools, we'll explore later in this course.
Click on your audio clip and play it. (Female speaker: (inaudible) Hansel and Petals for years?) You can hear that I have all that introduction of the cellophane rattling. That will be great for me to trim out. When I am clicked on my audio clip, two new Audio Tools tabs open up at the top. Click on the Playback tab. On the left side there's a button that has a speaker on it and the words Trim Audio. Click on it. A Trim Audio dialogue box opens. At the top, you can see your clip name on the left and the Total Duration on the right.
In the middle, you have a timeline. The green handle on the left is the start of the clip and the red handle on the right is the ending of the clip. You can see sound waves on the middle. These can help you find the perfect place to start or stop in coordination with your audio. Below the timeline are specific Start and End Times. The first two numbers are hours, after the colon is minute, and after the decimal are seconds, down to the thousandth of a second. These values will change as we move the handles or you can type in the boxes to specify the exact moment yourself.
When I click on the timeline a blue playhead appears. I can use my Spacebar to start and stop the playback. In the middle I have a play arrow which switches to a pause arrow. The button to its either side will let me move the playhead forward and back 1/10 of a second at a time. By using this combination of buttons, I can click approximately where I want to start or end and then fine- tune that moment with the arrows. Now I know that I had some cellophane, so I'll click back here and Play. (Female speaker: Hansel and Petal?) And I can see in the sound waves right where my sound begins.
So I'll put my playhead in that location and fine tune it and play it. (Female speaker: Hansel and Petal?) That was perfect. Now I'll drag my green handle to this position. If you can't land right on it, get as close as you can, and then edit the Start Time or the End Time to this specific moment by using the arrows or by typing numbers into the box. Keep in mind that if your start or finish is a bit abrupt, you may want to use the Fade In and Fade Out features to ease your sound. If that's the case, leave yourself an extra second or two at the beginning or end of your clip.
We'll explore Fade In and Fade Out in a later video. When you're done click OK and when I click Play... (Female speaker: Hansel and Petal for years has been providing?) We now have our shortened clip. If you need some further adjustments, like maybe that was a little fast, I can go back to Trim Audio and move my Start back just a touch. (Female speaker: Hansel and Petal for years has been providing?) Now that I've trimmed the length of my clip, you can save some file size by using the Compress Media feature.
We'll explore our compressed media in detail later in this course. For now, know that Compress Media will delete the unused portion of your audio clip, though it may reduce your sound quality as well. Once you've compressed your media clip, that trimmed material will be gone, and if you change your mind about your trimming points, you will need to start over again with a fresh file import. The ability to quickly and easily trim the beginning and end points of your audio clip right inside the PowerPoint will save you hours of time, now that you don't have to open up sound editing software for quick edits.
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