I do have noise somewhere but can't be sure if it's mic noise, preamp
noise, and/or playback amp noise. I use a pair of SoundPro cardioids built with
Audio Technica AT853's, and a Sharp MD-DR7. Most of the time there is enough
background noise outdoors to hide any system hiss. Recently I made an indoor
tape and when the environment was quiet I heard a *lot* of hiss. I play back
the files into my computer sound card - which seems to record other sources
without adding hiss.
The self-noise specs are impossible to find, even on the AT site.
Likewise for the DR7. So, the question is, how do I upgrade other than by
buying something new and hoping it's quieter? Where do I find the specs?
Question - do the new HiMd units allow you to copy ATRAC files to your
computer without playing them back? That would eliminate one possible source of
noise.
Possibly unrelated question - on the indoor recording I got a 20 db
spike above the hiss at 8200 hz which I did not hear at the time. It only
became obvious when I filtered the hiss out and boosted the treble. Could this
be some kind of mic feedback noise (the two mics were pretty close together and
within each other's polar pattern)? It was present during the entire recording.
Thanks - Chuck
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Chuck Bragg, Pacific Palisades, CA
Membership, Newsletter, Web manager
Santa Monica Bay Audubon Society
www.smbas.org
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