Hi Gary,
Thanks for your interest. I am quite aware that the gurus at Elecraft
are extremely busy and need evidence that firmware changes are
beneficial. That is why I asked that those with the KRX3 should try my
method and report their findings.
This method is only good for evaluation but you don't want to tie up
the KRX3 with it.
The brain seems quite happy with a large chunk of bandwidth missing. We
are not talking Hi-Fi but intelligibility. Try it and make your own
decision.
The K3 has a great CW receiver but SSB improvements seem to be on the
back burner.
73
Tony VE3QF
Gary Hvizdak wrote:
Hi Tony,
This sounds very cool and your approach most ingenious. However, it
is likely that Wayne and/or Lyle would want sufficient evidence
regarding the value of this sort of notch filtering, before expending
the effort to implement it in firmware. In the mean time, your dual RX
approach using the sub-receiver should provide you with a useable
workaround method to accomplish such a notch.
BTW, I just did a quick search online and found the following link …
http://basic-programming.blogspot.com/2005/10/speech-recognition-formants-for-vowels.html
… which implies that there is no such gap in the spectrum “for all vowel
sounds”.
73,
Gary KI4GGX
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