Creating sound annotations
1. Select the Note Annotation and select the sub-category for Sound
Annotation
. You can also set the style of the Sound annotation:

2. Tap on an empty space in your document and tap Record to start recording.
Please note that this feature will need the microphone permission on your Android device in order to record sound, and a dialog asking for this permission will appear the first time you use this feature:

3. When you're done, tap Stop. You can then preview your recording, record a new audio file, or finish the recording session:

4. When you're all finished, you'll see your Sound Annotation in your document and you can tap on it to listen to it or modify it:
