Sound is a fun and easy to use app that displays a visual representation of noise.
Change the sampling rate and see how words are formed, or play a music instrument and examine the harmonics.
![INSOMNIA RELIEF [Fall Asleep Fast] "The Blue Forest" Binaural Beats Sleep Music screenshot 5](https://i.ytimg.com/vi/FIMdEPd98xs/mqdefault.jpg)
9Apps 4.9
