Audio distortion from camcorder import

Hi! After importing from my camcorder, the audio has a static distortion sound running through it along with the normal audio (although the distortion sound is louder than the talking). The movie sounds find on the camcorder and also on the DVD's I transfered them to with my DVD recorder. The odd thing in imovie is that in this 3 minute movie I'm transferring (which was made in Adobe Premiere), whenever I did a video drop in over the video of someone talking (while keeping the audio still being the person talking), the distortion stops????
BTW, is it possible to import into imovie from that DVD via the Apple drive?
Thanks.

The DV converter is locked for 16-bit, 48kHz. I have the option to move it to "unlocked audio"....have no idea what the coverter would do to the bit rate then. Might be something for a trial. Thanks for the advice.
As a temporary workaround (but a big hassle), I extract the audio from my imported clip in iMovie. I then take that extracted audio .AIFF and import it into Audacity. The first three or so seconds of the video is just the hum....perfect for Audacity to recognize it for it's noise filter. I then apply the noise filter to the entire .AIFF file, then move it back to the iMovie media folder.
The resulting movie still stays in synch between audio/video, but now the hum is greatly reduced due to Audacity's noise filter. I notice a small loss in fidelity, but it's worth the tradeoff to (almost) reduce the hum.
Thanks again for the post, and for trading ideas! Adam

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