Data from sound spectrum experiment

[Jens Noriʇzsɔɥ]

The current phyphox version is 1.1.5.

Could you try to

• export a CSV-file in order to rule out .xls problems,
  
• export data of a short run (far less than the 15 seconds): the file should be shorter then if data is not cut.
  

I have just tested OK on an iPhone SE (2016), so perhaps less of a performance problem on this platform.