Audience Keeper is an app to measure and protocol sound pressure level according to DIN15905-5. This app was developed for iPad running on iOS 6 by students of the University of Applied Sciences Duesseldorf.
It is possible to choose between DIN measuring mode and non-DIN measuring mode. In non-DIN measuring mode you can set an individual threshold. Audience Keeper saves all data during the measurement which can be exported as a CSV-file. Event data and calibrations can be saved in individual templates as well.
During the measurement the following parameters are displayed: a graph showing the sound pressure level of the present interval, highest c-weighted peak, current sound pressure level, time left until the next interval starts, a-weighted level in average during the present 30 minutes period. A special feature of Audience Keeper is the "Level Assistant" which tells you how to reduce your level if the chosen threshold is excessed.


AUDIENCE KEEPER was developed by:

Manuel Mäusener
Jonathan Neu
Jan Selzer
Jill Zimmermann, B.A.

Students, Bachelor of Engineering in Media Technology
Department Media
University of Applied Sciences
Düsseldorf, Germany

Under supervision of:

Prof. Dr.-Ing. Dieter Leckschat
Dipl.-Ing. Christian Epe