specification of frequency bands and range

[Graham Voysey]

Is there the ability to focus on particular a frequency range, or set the binwidths of the filterbank elements? e.g., display a spectrogram from, say, 2 Hz-8 kHz with 24 bins. (i picked the bin count and frequencies semi-randomly)

Right now, it seems that these parameters aren't exposed to the user, but I could be missing something.