[WT-support] some issues with the muting at voice recorder

[Bob Wilson, N6TV]

As I understand things, the Windows OS APIs (software interfaces) that
control the sound card functions like "mute mic" were completely changed
after Windows XP, and 100% backwards compatibility with old sound card
applications like Win-Test and sbrdchk was never provided by Microsoft.

They expected application developers to migrate to the "new" sound card
APIs and libraries, but that requires Win-Test code changes, *and* a
completely new development environment, *and* a complete recompile and
retest of all Win-Test code.  That is not going to happen any time soon (if
ever).

In other words, the "Mute MIC when the DVK is playing" option of Win-Test
does not work any more, except on Windows XP, and it cannot be easily fixed.

Depending on your radio type, consider using the radio's built-in sound
card or voice memories instead of using a PC sound card. This will usually
mute the radio's mic line. Scripts support this.  See
https://bit.ly/wtscripts .

But note that voice memories do not work well with the Advanced SO2R
scenarios, because Win-Test does have built-in code to support voice memory
events. And since Win-Test only supports one sound card as a DVK, there is
no way to use two sound cards, one inside each radio, with the Advanced
SO2R scenarios, unfortunately.

The only way to mute the mic when a message is playing would be via a
hardware relay to open the mic. line, plus some scripts to toggle a pin on
a dedicated serial port during all message transmissions, but I don't think
anyone has ever tried to do that.

73,
Bob, N6TV


On Aug 15, 2017 12:15 AM, "Thomas Fricke" <t.fricke at imgromex.de> wrote:

Hi @all,



I know there was a thread of SM5AJV in 2011. But I think I have a different
issue.



The problem: There is no muting possible in win-test.



The script http://www.writelog.com/Downloads/sbrdchk.zip showed that
“WriteLog failed to find a mute button on the output mixer.” BUT: At there
is a mute button at -> System -> sound -> recording tab -> double click to
the used microphone -> level (i.e. Pegel in German ;-).



As a matter of fact I don’t think that my hardware is to old: Latitude D630
with Windows 8.1



Many thanks in advance for your support.



73 de Thomas, DL4VCM

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