A free program for Android, by T2400app.

Echo Surrounding Lite is a simple and effective app that makes it possible to hear a person or a noise from a distance and to listen to it later with greater clarity and better quality. It works with Android devices that have a microphone, even if they are not in use.

The app is designed to be used in a quiet environment to get the best results.

Echo Surrounding Lite can be used in various situations, such as in a restaurant or in a train. It can also be used to listen to a lecture or to play a musical instrument.

It is not a microphone that creates a sound, but a tool that makes it possible to hear sounds from a distance.

The app can be used with or without headphones.