While holding down the Shift key, click 10 seconds to the right of the cursor.Zoom in until the Timeline shows 10 seconds or more before and after the cursor.With playback stopped, click near the point where you want the 10-second piece to begin.See below for how to create and adjust selections using the keyboard. These steps require a mouse, except for using Space on the keyboard to play the selection and C to play either side of the selection. To cut this audio file down to exactly 10 seconds, use these following steps. Walk through deleting all but approximately 10 seconds of selected audio Use the Zoom commands so that you can make maximal use of your Audacity window to see as much detail as you need, or to make sure you see the entire file when necessary. View > Track Size > Fit to Width (or Ctrl + F) will zoom the waveform so it fits in the window. View > Zoom > Zoom Out (or Ctrl + 3) is the same as clicking the Zoom Out button. View > Zoom > Zoom In (or Ctrl + 1) is the same as clicking the Zoom In button.
There are also menu commands and keyboard shortcuts for zooming. Note that when you click the Zoom In button the cursor is centered on the screen. Keep clicking the Zoom In button until you see the detail you need. To zoom in to get a closer look at the waveform, first choose the Selection Tool, then click near the point you are interested in, then click the Zoom In button. The image above shows Edit Toolbar with the Zoom buttons highlighted. You do the same thing in Audacity: first zoom and select the range of audio you want to change, and then choose what you want to do with it. You might want to cut or copy the text, delete it, paste new text in its place, or change it to bold.
When you are editing text you first select the text you want to change and then choose what you want to do with it.
You edit audio waveforms in Audacity in much the same way as you would edit text in a word-processing document. Step 5: Create a 10-second clip from your audio
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