soughing sound.

[versal]

hey guys,

i already posted this problem @ the german client forum, but
nobody could help me.

im using teamspeak in voice activated mode and no matter which codec i use, my voice always makes a soughing sound after speaking.
i did a lot of settings to fix this problem, even reinstalling my driver, but nothing helped till now.
the sound holds about 1 or 2 seconds and i can hear it in test mode, too.
my voice is clearly to understand, its only this disturbing sound which i want to dispose :/

can anybody help me?

my system:
- win2k
- sound on board cmi 8738