noise introduced by audio sequencer

Hi I recently started playing with the sequencer with some audio and noticed that the mixdown process creates a wav file that some high frequency noise in it which is not present in the original audio input. anyone else experienced this?

I haven’t used it to output audio but I have used it for syncing an animation and found that every so often (about every 15 minutes or so) the audio playback would corrupt to a high-pitched sqeal and the file would have to be saved and re-opened. May or may not be related to your problem

2.4a2 (29/11)