Zero Noise Classroom

The free noise level display and stopwatch for the cooperative classroom. It helps students be aware of the noise level in the classroom during cooperative learning activities, and moderate it accordingly. When time is over, the percentage of time that the noise level has exceeded the optimal level is displayed, so the teacher can use that value in gamification techniques. Adjust the microphone sensibility in your operative system for best results. Code partially adapted from https://github.com/cwilso/volume-meter by Cris Wilson. Uses free Saxmono and Roboto fonts, IcoMoon scalable icons and sound from http://soundbible.com. Special thanks to Julio Lozano for testing. What's new: Version 0.2.9: App icon changed. Version 0.2.8: Main and info windows are now opened top most. Version 0.2.7: Bugs fixed. Version 0.2.6: Some bug fixed and cosmetic changes. Version 0.2.5: All default options can be saved from the info/options window. Cosmetic changes in the info/options window. Version 0.2.4: Now the default time can be specified in the info/options. Some bugs solved involving missing fonts. Version 0.2.3: Minor cosmetic changes: the colon now blinks when the timer is paused. Version 0.2.2: Now, if no microphone is detected, the app will not try to work (it turns out that it is difficult to measure noise without a microphone ;-). Version 0.2.1: Pause/Resume added. Space bar toggles it.