Hi ALSA experts, when trying to record using a microphone and an nForce3 on-board sound chip (Alsamixer says: Card: NVidia CK8S Chip: Realtek ALC850 rev 0), I always get a high pitched noise that drowns out the mic signal. The noise is nearly perfectly sawtooth-shaped and mostly takes exactly half of the spectrum (e.g. from 0 to +1 or from 0 to -1). I attached a wave file with a sample of this. When switching the mic physically on or off (or connecting/disconnecting it), the noise often flips from one half of the spectrum to the other. I'm using a dynamic mic that works flawlessly on other equipment. I'd appreciate if anybody has an idea what to do about this somewhat strange problem. Best regards, Victor
Attachment:
noise.wav
Description: Wave audio
Attachment:
pgpPYkHyziYk2.pgp
Description: PGP signature
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