2. Select the mp3 file in the folder and drag it to the scene panel.
3. Then press the shortcut key "f5" to create an appropriate number of frames.
4. Then find the imported audio in the library and drag it into the scene.
5. Next, set the audio. Click Edit Sound Envelope.
6. The "Edit Sound Envelope" interface pops up, and you can adjust it according to your own needs.
7. Finally, drag the "Front Intercept" and "Back Intercept" buttons to the appropriate positions, and then click "OK" to finish.