The part at 1:03:00 involves a signal that had a large impulsive
component, and was treated with a combination of noise blanking and
noise reduction. Applying pure noise reduction wasn't going to help.
You can actually see from the pure noise reduction example they played,
that they were not
I’ll give a quick summary of that preso.
The longest section is about noise blankers, not noise reduction. He discusses
three types. First, the traditional blanker that takes the signal to zero
during a detected impulse. Second, an interpolating blanker that replaces the
impulse-affected
https://www.youtube.com/watch?v=FrVDL_-HOds starting at 41 minutes.
Particularly at 1 hour 3 minutes.
On 1/12/2019 9:51 AM, David Woolley wrote:
Do you have a reference for an algorithm that will do this?
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Hello all, Hello Wayne,
following Mike KF6KXG suggestion, i would like to have a more intuitive
Noise Reduction (NR).
I used several last Icom or Yaesu model and their NR are more intuitive
and easy to use, without loose efficiency and without ruin the signal
audio and strenght.
Especially
sounds like an Aphex Compellor
On 1/13/2019 10:01 AM, HB wrote:
I have used an outboard compressor/expander for this (paired with a 7 band
parametric(quasi) equalizer) and besides normalizing audio levels can squash
static crashes and pad certain frequencies above a certain intensity
What ever happened to giving us some alternate selectivity on the APF?
73, Roger
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Post:
I have used an outboard compressor/expander for this (paired with a 7 band
parametric(quasi) equalizer) and besides normalizing audio levels can squash
static crashes and pad certain frequencies above a certain intensity
automatically (similar to de-easing in function). It was more analog than
On Fri, Jan 11, 2019 at 8:50 PM Walter Underwood
wrote:
> It would be really great if the AF gain was automatically to keep the
> audio roughly level when NR is engaged. This drives me nuts, always riding
> the gain back and forth. I’m sure the gain adjustment would be different
> for different
forty years in the audio business have allowed me to hear some of the
best and worst audio/\
I bought clear speech before and after Bob tired selling it, and two
others before finding the BHI product series from England. Some how
their algorithm, to me at least, does the least harm to human
-
From: elecraft-boun...@mailman.qth.net On
Behalf Of Walter Underwood
Sent: Saturday, January 12, 2019 9:21 AM
To: Elecraft Reflector Reflector
Subject: Re: [Elecraft] Query for new DSP features
Sorry, KX3. Though I think the K3 and KX2 use similar algorithms.
wunder
K6WRU
Walter Underwood
CM87wj
David's analysis is correct. Go to his last sentence - that is the
Noise Blanker (NB) and not Noise Reduction (NR). NB punches a hole in
the signal in response to impulse noise. It will cause signal
distortion, getting worse with more aggressive settings.
Noise Reduction (NR) depends on
Do you have a reference for an algorithm that will do this?
Noise reduction is difficult because any effective noise reduction has
to recognize what is signal, and ideally what is the part of the signal
that matters to the human. The hearing aid industry has been trying to
do this for years,
Sorry, KX3. Though I think the K3 and KX2 use similar algorithms.
wunder
K6WRU
Walter Underwood
CM87wj
http://observer.wunderwood.org/ (my blog)
> On Jan 11, 2019, at 8:53 PM, John Evans wrote:
>
> And yet, I have no idea which Elecraft rig you are referring to here. Drives
> us K1, K2, KX3
Use external audio processing, otherwise a compressor or limiter, with
variable attack and release and threshold and ratio controls. Then
follow that with a small power amp to drive an external speaker.
Frankly, I doubt you'd like the results.
I find it better to not use the NR feature
Regarding my K3 (original): DSP reduces the volume. When you turn the
volume up to where you can again hear - the junk noise level is right
back up there also.
A couple of days ago we had a major wind storm and a power line down the
road was periodically arcing. It was uncomfortable to listen
And yet, I have no idea which Elecraft rig you are referring to here.
Drives us K1, K2, KX3 owners crazy.
73 - john - n0hj
On 1/11/2019 9:49 PM, Walter Underwood wrote:
It would be really great if the AF gain was automatically to keep the audio
roughly level when NR is engaged. This drives
It would be really great if the AF gain was automatically to keep the audio
roughly level when NR is engaged. This drives me nuts, always riding the gain
back and forth. I’m sure the gain adjustment would be different for different
conditions, but at least get close.
wunder
K6WRU
Walter
Wayne,
I would like to see an improved Noise Reduction that doesn’t lower the
volume or distort as much. Also the digital mode decode has never really worked
well for me and, yes,
I read the manual about using it. Could you have the digital choices RTTY,
PSK31, etc. instead of the current
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