When the coronavirus pandemic prompted the search for a way for the members of the FH Aachen university choir to hold their joint rehearsals online, they initially looked to the usual video conferencing programs.
However, it quickly became apparent that these were practically unsuitable for synchronized music transmission. In the search for an alternative, they then came across the open source software Jamulus, which made it possible to make music together online with a PC and some additional hardware.
However, the configuration of the PC posed major challenges for choir members with less computer knowledge.  It was also unclear which settings needed to be selected for the best possible performance. It was also suspected that programs and updates running in the background on the Windows devices used led to considerable performance losses. 

As a result, the interdisciplinary project “MusiUeINet” was carried out by students at FH Aachen.
In this project, a single-board computer was set up with a RaspBerry Pi, on which Jamulus is very easy to start. An inexpensive USB audio interface, a microphone, headphones and the Internet were connected via LAN cable as external hardware.

The optimal settings in the software and which microphones and USB interfaces are recommended were examined.
The frequency response of audio transmission via Jamulus was checked using software. It was shown how transmission errors can be measured using a function generator and an oscilloscope.
In addition, a measuring device was developed with which the transmission errors can also be easily measured without a function generator and oscilloscope.