I bought a USB SpeedLink SL-8707-SSV Pure Voice microphone.
When I record with it (audacity / windows sound recorder) it records a terrible scratching noise:

I've looked for drivers but on the company's website it says:
Microphones don't require drivers. They will be configurated in the settings of your sound card.
My computer:
- P5QL PRO Motherboard (I assume the "audio card" is on the board)
- Windows 7
I've experienced no other sound problems with the audio.
This is my first USB microphone (I've had always used the jack plug microphone).
Is there something that I don't know about USB microphones or is this particular microphone just defect?
