On 08/07/2017 16:51, James Shaver (N2ADV) wrote:
Understood.
73,
Jim S.
N2ADV
On Jul 8, 2017, at 11:44 AM, Bill Somerville<[email protected]> wrote:
On 08/07/2017 16:37, James Shaver (N2ADV) wrote:
If that slider could be mapped to act like a mic volume control to adjust the incoming
audio up or down similar to the "pwr" slider on the opposite side adjusts the
outgoing audio volume that would do the trick
Hi James,
that is exactly what we are trying to avoid. The operating system mic. slider
is just another digital level control that can only reduce the digital audio
quality if it is anywhere other than 0dB FS (full scale).
If anything we would take over that control and set it to 0dB all the time.
BTW Mike, W9MDB's, comments are valid too. It is not that critical.
WSJT-X expects to be able to see the weakest signals and that may mean
running with no receiver AGC. In that case the amount of headroom is
important so we suggest the 30dB noise level which gives the maximum
headroom without introducing another sort of distortion called
quantization error.
Other software that perhaps focusses on the stronger signals can use a
higher level, perhaps with receiver AGC to control the peak levels,
nevertheless that software should work just as well with the settings
used for WSJT-X (with or without AGC). If the software cannot display
weaker signals then perhaps the author should be contacted about a gain
control for the display -- like the WSJT-X level slider that now only
effects the waterfalls and spectrum displays.
73
Bill
G4WJS.
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