Develop an Android application that allows for (1) recording of audio, (2) computation of the noise level on different bands (overall, base band, etc. – all based on ISO 226), (3) microphone calibration with standard hardware, (4) authentication of recordings (e.g. based on the e-ID) with timestamp and location, and (5) a logger for long-time recording. Can also include a help page with contacts at police and local community. Requires good knowledge in audio processing and Android app programming.
