A free program for Android, by Ronasoft Media.
Microphone Amplifier is an app that uses your Android phone’s microphone to increase the volume of sound.
How to use Microphone Amplifier
To use Microphone Amplifier, you first need to install it on your Android phone. You can download it from Google Play.
When you open the app, you will be presented with a screen that will let you know if it is working.
If it is working, you will be presented with a microphone icon on the bottom of the screen. You can tap the icon to start capturing and amplifying sound.
To stop capturing and amplifying sound, you need to tap the microphone icon on the bottom of the screen.
To save your recordings, you need to tap the save icon on the top right of the screen.