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im trying to set up my microphone to work with Ubuntu 12

The Problem is that i can hear myself when i speak. And if i play for example music, the music then triggers the indicator for the microphone volume. So the output of the speakers is somehow also send to the microphone. So it's impossible to use for example Teamspeak because of the rustle.

How can I fix this?

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What sort of setup are you using; usb mic,analog mic, headset? –  jasonwert Jul 21 '12 at 22:44
Related: askubuntu.com/questions/94854/… but in 12.04 you may need this: askubuntu.com/questions/165858/… –  Takkat Jul 22 '12 at 7:44
@jasonwert Analog real 5.1 Headset with soundcard soundblaster x-fi –  Sapd Jul 22 '12 at 9:52
@Takkat I tryed different profiles also with pavucontrol, but all has the same result. –  Sapd Jul 22 '12 at 9:52
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