Fake data, run 2

I have made a test run using fake input data: sine wave starting with 0 phase of amplitude 1.0 where I varied filter settings.

The FFT size was 1800 seconds, consisting of thirty 60 second segments.

Window tail size was 20480.

All plots are logarithmic.

Old code, both high- and low-pass filters enabled

Old code, low-pass filter enabled

Old code, both filters disabled

New code that uses double precision for filter arithmetic

For the data corresponding to the last image the Sh value in the bin corresponding to 210 Hz is 29.211485.