A family of Microsoft presentation graphics products that offer tools for creating presentations and adding graphic effects like multimedia objects and special effects with text.
Hi Firooz,
Thanks for posting in the community.
According to your description, you want to change the volume of the existing audio or the volume when you are recording. To make the voice/audio louder, you can select the audio, click the Playback tab and change the Volume setting in PowerPoint Or go to Windows system> System> Sound> under Advanced sound options, click “App volume and device preferences”, change the volume of App.
To make the voice/audio clear or sharp, I am afraid the built-in recorder can’t meet your requirement. Please try to:
- Update the drive of your microphone or change another microphone.
- Use the 3rd party software to record your voice or edit the audio.
Based on the situation, I would like to suggest you send feedback to Microsoft via File> Feedback. It’s the platform for us to hear your voice and improve our products.
Appreciate your understanding and patience.
Regards,
George