Using a sound card and i hear static noise

So try to test this: While idling in a channel on Opus Voice codec, with a better sound card like Creative G6, Asus Essence STX or Yamaha AB06 on Beyerdynamics headset makes me hear a hizzing/static noise all the time.
When closing TS it dissapears.
Time for some updated codecs? Really annoying, i did see Teamspeak announcing in the start of TS5 that there would be 32-bit 384khz sound, where is it?

Is confort noise maybe enabled?


Wow great thinking, It was on.
But still, get some codec quality like mumble on 127kbits, not 7.