A few more changes....
Make ingain=0 so no gain is applied.
Added "db DNR" to status line "Receiving" message to one can see the noise
level. It turns red if DNR < 30dB.So you now have a low warning for DNR, and a
low/high warning for peak level in the meter plus the sticky "+" indicator if
you get too close to clipping.
This also let's you see the difference between peak level and noise level of
~10dB or more.
If the "guys" buy off on this idea I'll update the help file too. I have
increased the level by 20dB over what it was before and it's decoding like a
champ...it really feels like it's doing better....but that still may be wishful
thinking...real testing would tell which would have to be setup with dual sound
cards.
de Mike W9MDB
----- Forwarded Message -----
From: Black Michael <[email protected]>
To: WSJT Software Development <[email protected]>
Sent: Friday, February 24, 2017 9:21 AM
Subject: Re: Signal Meter Patch
I removed the "-" indicator for signal too low....it was not a good indicator.
The "+" remains so if you ever get above 80dB a "+" will stick next to the dB
number indicating possible clipping and that you should lower your
level....especially if it happens while you're operating.
https://www.dropbox.com/s/4tvlwvo9ebj7ju5/sigmeter.patch?dl=1
To set your audio here is similar to the other way. But to clarify this is
what I recommend:
#1 Set you audio input to 0dB on your sound control interface.#2 Set your rig
audio to give at least 50dB on the meter -- if you can't get 50dB you need to
find a way to amplify the sound coming out of your rig.You can attenuate with
the computer sound control but do not add gain....I don't know if there's a way
to tell if the sound control on a card actually controls the A/D amplification
inside the card or if they just all do it digitally. It might vary from one
interface to the next. The SignaLink appears to just do it digitally. All this
is subject to change based on what our "experts" have to say. But I tend to
think taking advantage of the full dynamic range of 16-bit audio is desirable.
With the increase in level on my system I see every little squiggle getting
decoded now and things getting decoded I can't even see.
de Mike W9MDB
------------------------------------------------------------------------------
Check out the vibrant tech community on one of the world's most
engaging tech sites, SlashDot.org! http://sdm.link/slashdot
_______________________________________________
wsjt-devel mailing list
[email protected]
https://lists.sourceforge.net/lists/listinfo/wsjt-devel
