I do believe that BHI Ltd ( Graham) has been using that for years...
check out their website . Under downloads there are several examples
of how well it works,.( really well...)
https://www.bhi-ltd.com/downloads/sound-files/
I always have been suggesting to Eric & Wayne to look at the BHI
algorythm ... patented ?? maybe it has a license fee ??? but it works
substantially better than 'clearspeech" and the rest of them. Till
recently GAP was the US distributor of the BHI products, then Graham
finally started doing US marketing himself...a much better job.
Used to use BHI speakers on my Microham mk2r connected to K3 & 7800, as
it was markedly better at NR. Now I have the Parametric/NR box feeding
some 3" realistic box speakers.
+++++++++++++++++++++++++++++++++
On 9/11/2020 9:32 AM, Kurt Pawlikowski wrote:
Grant,
You peaked my interest. I attempted to find examples of spectral
subtraction and only found talks about it (no audio examples). Would
you happen to know where I might find some examples? Maybe comparing
results between several noise reduction methods?
Thanks!
kurtt WB9FMC
On 9/10/2020 11:19 PM, Grant Youngman wrote:
I’ve recently been exploring quite a few of the many SDR receivers on
KiwiSDR. One of the (many) features of this system is an option to
select spectral subtraction NR.
I’m now really hyped about the fact that this will be available at
some point on the K4. It works exceptionally well. So well, that I
leave it turned on most of the time. Often, stations you can barely
copy down in the junk literally pop up out of the noise. Don’t know
if this will be available at initial shipment, but it’s certainly
something to look forward to if not. I’ve only tried it on AM and
SSB at this point, so not sure about CW.
Just something else to whet the appetite for that eventual “you’re
up” email from Elecraft sales … :)
Grant NQ5T
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