Philipp:
...
I hope to get a reasonably scientific answer (if it
exists).
...
Try something on [1], e.g. [2,3,4].
[1]
http://www.sengpielaudio.com/Unterlagen01.htm
[2]
http://www.sengpielaudio.com/TheorieGrundlaIntensitaet.pdf
[3]
http://www.sengpielaudio.com/TheorieGrundlaAequivalenz.pdf
[4]
http://www.sengpielaudio.com/TheorieGrundlaLaufzeit.pdf
Regards,
/Karl Hammar
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