Regarding the sample rate consider to use 48 kHz usually there's no
advantage to use a higher sampling rate and most of the times a lower
sample rate does cause audible loss.
"The Audio Engineering Society recommends 48 kHz sampling rate for most
applications"
"Most professional audio gear uses 48 kHz sampling, including mixing
consoles, and digital recording devices."
https://en.wikipedia.org/wiki/Sampling_%28signal_processing%29
Regards,
Ralf
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http://www.grundgesetz-gratis.de/