t60_impulse estimation fails for octave bands up to 16kHz with fs=44100Hz #262

Example code:

from acoustics import room, bands
t60 = room.t60_impulse(file, bands.octave(31.25, 16e3), "t30")

An error raised ValueError: Digital filter critical frequencies must be 0 < Wn < 1, which happens at the last frequency band

octave_high() gives the largest element of high is 22627.41699797, which is out of range of Nyquist at 44100Hz. That results in the ValueError in

It may be better to check the frequency range in octave_high and third_high or just after they are called.