Double-click to open the software, and click "Add File" to add the audio file to be processed. The shortcut key Ctrl+A selects all the audio, and click the "Change the rhythm" function. You can drag the percentage directly to realize speed change, just change the percentage here, and anything less than zero can slow down the audio.
Open the whiteboard file to insert audio in the list of cloud courseware, and click the "Multimedia" button in the toolbar. After clicking the multimedia button, we can see the computer explorer page. Click to select the folder where the audio is located.
Open PPT and find the first of several consecutive slides to which you want to add audio. Select the Insert tab in the ribbon. In the Insert tab, click the button at the top of Audio to select an audio file directly from your hard disk.