Hey Guys,
Well, I finally got a chance to align the filters in the K2 using
Spectrogram and the mini-module noise generator. I followed the various
published recommendations and did the adjustment by centering the
passband around 600 Hz for all 4 CW filters. For the SSB filters, I
adjusted for a passband between 300 and 2400 Hz (more or less).
Results on CW were a bit off. As I stepped from CW wide to CW narrow
the perceived center frequency of the background noise would shift.
I went back to Spectrogram and redid the alignment with the X axis set
to log rather than linear.
After that, the perceived center frequency sounds pretty much the same
at all 4 bandwidths.
Based on my experience, the log scale is the right one to use if you
want the filters to sound right.
- Keith -
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