Microphone not registering in GMOD, works properly in all other source games

I can’t even use “test microphone”, and voice chat, of course, does not work for me. Any help? Specs are not necessary; the microphone works well in all my other games.

[editline]5th February 2011[/editline]

Nevermind. Voice_enable was stuck at “0” (checking “enable voice chat for this game” did not work, entering it in console did)