ok... this is something that other folks can absolutely test (grin)
i have audio feedback (button beeps) turned on in my K3 and i've been
playing with the 3.25 and 3.27 beta's
i just noticed that with 3.27 that when i either 'turn on' or 'turn
off' (momentary press) or long-press the NR button and the filter is
set to either F1-1, F1-2, F1-3 or F1-4, the button beep is not a
clean beep sound (sine wave?) but a little 'dirty' like there are
some overtone/harmonics mixed in... you can possibly hear this
through the speak, if you have great hearing, but it is very obvious
with headphones (i'm using the sony mdr-v6)
if you set the filter to F2-x, or F3-x, then the beep is perfectly
clean and sweet (like a stravinsky concerto!)
extra wrinkle... i have NB off but had NOTCH set to auto... turning
the notch filter off or to manual seems to 'change' this behaviour,
but not in a predictable way... with the notch filter off the button
beeps are clean (i think) but sometimes turning the notch back on
makes the beeps dirty again, and sometimes not... wish i could be
more clear.
btw, i'm doing all this testing with the audio level down to zero,
listening through phones to just the beeps (yah, sometimes that's
safer than trying to call CQ)
some kind of interaction in the DSP between the NR code and NOTCH
code? wondering if anyone else can repeat this and, if so, are you
having success with the new 3.27 NR modes in SSB?
many thanks to anyone who can do this test!
73
robin (K9RDG)
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