Click the loudspeaker icon in the system tray and then click mixer. Open Settings->Configure channels and make sure all microphone channels in Available are also in Visible. Click OK. Then adjust your Mic channels to see which one your microphone is on.
You might also have to play with the input settings of Sound Recorder (I'm not familiar with it) to ensure it is listening to the mic.
I, too, was having a problem with talking on google. Could hear them, they couldn't hear me.
I believe the change that I made that got it going was selecting the correct input in the mixer window.
"arecord" without the quotes, output in konsole resembled ASCII art. Finally closed its' window when scroll bar was this ( - ) thick and going strong still.