Why does resampling change the frequency range? I am currently working on a set of .wav files which, unfortunately, do not have the same sampling rate - I need to resample them for the purpose of feeding them to a neural net.
So - using Sox I resampled every file - with the command:

sox -v 0.99 filein -G -r 192000 fileout


However, having a look at the resampled files: ,
the frequency range has changed. Which is confusing me. I have put several hours into finding out why this is happening but i can't seem to find the reason.
Can somebody explain? 

EDIT1: Just realized that this example is misleading as I am referring to the change in maximum Frequency, (the y-labels)
Uniformly sampled pulse code modulation (PCM) audio such as WAV files only encodes frequencies up to the Nyquist frequency, which is half the sampling frequency. So for a sampling frequency of 500 kHz you can have frequencies up to 250 kHz, and for a sampling frequency of 192 kHz you can have frequencies up to 96 kHz. This is reflected in the range of the Y labels.