Android data acquisition of internal/external sensors

The aim of this project is to get an app with a simple graphical interface for data acquisition. On one hand the data of the device internal sensors (max. two sensors) should be recorded. On the other hand it shoud be possible to record the sound captured by an external microphone in parallel. The data format of the saved recording shoud be a structured text file (csv) or similar. Very important is to ensure a fast and stable sampling rate of the acquired signals as well as unfiltered signals (details have to be clarified). Beside the signal values a time reference has also to be saved. As long as the app is active the device should stay active and the app has to get a high runtime priority. As an option an automatic email creation with predefined text and recipient as well as the recording attached would be nice.