DSP functions ANF, NR & NB are basic radio functions that really need attention.

  • 14
  • Problem
  • Updated 5 years ago
  • Acknowledged
6500 on SmartSDR v1.3.0 Windows 7 Ultimate, I Intel i7 Processor, 16 Gig RAM.

I purchased the 6500 as a step up from my 14 year old Icom 756 Pro.  In many ways it is but the basic DSP functionalities of noise reduction, auto notch filter and noise blanker simply don't measure up to the Icom.  I don't regret buying the 6500 but PLEASE focus on these basic functions as soon as possible.
Photo of David H. W5CAH

David H. W5CAH

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Posted 5 years ago

  • 14
Photo of Steve - N5AC

Steve - N5AC, VP Engineering / CTO

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Official Response
We are indeed actively working these algorithms.  In the past, we tended to ask folks for a sample of what they are trying to overcome (noise file) and then we would tweak the algorithm.  This approach has tended to make it work better for one guy and worse for another so we are not happy with this approach.  Instead, we now have some folks doing some more in-depth analysis of the algorithms and suggesting changes.  We are also in the process of a long task of setting up automated software testing on all four SmartSDR radios with the intent of checking all of these algorithms against different stimulus each release to ensure changes don't creep in.  I'm hoping to have the first cut at changes in v1.4, but this is what we call a "science project" to pick the best algorithm and make sure we don't make things worse before making them better.