Hi.
A DSP filter can do this to a degree, but it generally introduces
distortion into the intended signal, because in order to remove the random
noise frequencies, it is inevitably also removing a little of the intended
signal, giving it a kind of watery sound. I have used DSP filters for
about ten years, and there are times when they are handy, but they are
definitely not the be all and end all, and there are times when I actually
prefer a good crystal filter to a IF level DSP filter. Just goes to show
that there is no one perfect solution to those unwanted signals and noise
sources.
73, de Lou K2LKK
At 10:16 PM 2/5/2006 -0800, you wrote:
>Hi
>A few years ago I had an idea for a filter that would remove the back ground
>noise on HF. I was wondering if a digital signal processor does this or if
>some one had made a commercial filter to do this.
> It would be a help to catch those stations that fall below the noise
>level!
> God bless,
> Mark WZ0K
>God loves you!
>My personal prayer book.
>Add your prayer or pray for others at the following link.
>http://prayerbook.homewithgod.com/cgi-bin/prayerbook/multi.pl?131961113534708:24:0
>
>http://lists.topica.com/lists/funhamradio.
>
>http://funhamradio.bloki.com
Louis Kim Kline
A.R.S. K2LKK
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