[Elecraft] DSP and the KX3

[Phil Hystad]

Wayne,

Thanks for the quick reply.  My friend and I were discussing ways of doing this (that is, sending/receiving clear voice with DSP helps) and then I decided that it has been done.  Well, not by the K3 because it does not digitize the actual signal being sent but I was thinking of D-Star and its use with repeaters.  I wonder how wide that digital signal is, maybe you know.  D-Star on HF might be too wide.

73, phil, K7PEH


On Feb 5, 2014, at 2:59 PM, Wayne Burdick <n6kr at elecraft.com> wrote:

> Hi Phil,
> 
> The KX3 (and K3) both provide several ways to make speech signals more intelligible in the face of noise or reflections, including NR (stochastic noise reduction), NB (impulse blanking), and passband shift/width adjustment. I'm not sure that compensation for multipath distortion is possible or even desirable, but it's an interesting question.
> 
> 73,
> Wayne
> N6KR
> 
> 
> On Feb 5, 2014, at 2:48 PM, Phil Hystad <phystad at mac.com> wrote:
> 
>> For you KX3 signal processing experts and the algorithms implemented for the KX3?
>> 
>> Is there any work to clean up an actual SSB signal to make it more intelligible in cases of various phase changes or interference via reflections (ionosphere).  I mean, a slightly warbled signal cleaned up to reduce or eliminate that kind of distortion?
>> 
>> I am not even sure if or how this can be done as my experience in signal processing is certainly not up to that level but it seems that it may be possible.
>> 
>> No, this is not because I am having a problem with my KX3, it is a question asked by a friend of mine so I am relaying it here.
>> 
>> 73, phil, K7PEH
>> 
>> 
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