Crackling sound with Tritton AX720 and Mac

Crackling sound with Tritton AX720 and Mac.

Background: I'm playing PS3 multiplayer game where in-game voices doesn't work properly. So we are using Skype (or TeamSpeak) with friends to have decent voice chat.

- PS3 is connected to Tritton AX720 decoder with an optical cabel (general PS3 sounds comes this way to headset)

- MBP (Lion) is connected to Tritton decoder with USB cabel to get Skype voices to headset (normally this usb comes from PS3)

Problem: I can hear all game sounds and Skype voices fine from other PC users, but my own voice starts to crackle to them when I speak. It may be fine for some first minutes, but then crackling starts or some times crackling disappear for a while. But generally my voice is crackling to all other. If I use MBP's built-in microphone instead, then my voice to others is ok.

Tritton decoder is identified as C-Media Audio device. Problem seems to be in the way how OSX handles this Tritton / C-Media usb device's voice in. PC / Windows users doesn't have this problem.

Is there way to fix this usb crackling? Better drivers for C-Media Audio? Some setting tweaking? Or is Mac's audio hw just crap and you can't do anything?

I and some other Mac users would like to use our Tritton's headset mic instead of Mac's built-in mic which by the way is very good to capture background sounds from the apartment, like your wife's opinions about playing fps 😉.

Thanx in advance for your replies and comments!