Centra Microphone Feedback
Some of you have
been experiencing feedback problems with your new laptops when
participating in a Centra conference. I had a News & Notes item about
this issue on the ETCS home page for a time, and I’ve reprinted the
instructions below. Look for a Quick Tip item for future reference as
I know the problem
can be aggravating, but fortunately the fix as outlined is simple. Be
sure to test your existing microphone on another computer, and/or try a
working mic on your machine when tracking down the problem. This will
quickly eliminate the microphone as the problem.
I know of at least
one instance where no microphone could be made to work at all. It
turned out this was a hardware failure in the laptop sound card. If
you’ve made sure you have a working mic and have completed the fix
instructions but still can’t make it work, it may be time to call ETCS.
You can contact
Charlie Baerwald at
Chris Pfingsten at
if your efforts have failed in this regard.
ETCS is happy to
assist you, but we do handle a high volume of call traffic—so please be
sure to exhaust all avenues prior to calling, thank you.
- Go to Start » Control
Panel » Sound.
In the window that opens, click
the Recording tab. You should see icons for your built-in and
external mic, as well as icons for "Line In" and "Phone Line."
Right-click the built-in
Click Disable. The icon
should disappear or be marked with a red "X."
If both of your microphone icons
disappear, right-click one of the remaining icons and choose, Show
Disabled Devices. Both microphone icons should reappear.
- Right-click the external
microphone icon and choose Enable. This should take care of your