Entertain and teach young kids as they watch the screen change according to the noises they make.
Check out Sound Wave Pro (https://play.google.com/store/apps/details?id=com.synaptik.soundwave.pro), it has more features than Sound Wave and includes Live Wallpaper support!
This app does not record any audio.
Full source code can be found here: https://github.com/synaptik-/SoundWave
Keywords: audio, wave, oscilloscope, microphone, visualize, sound