http://www.xeno-canto.org/156721
James,
I can't hear any "feedback noise" but the record level is far too high
making the limiter bounce the levels down and up. Listening critically on
the peaks, there is a bit of digital crunching on the overloaded bits as
well as background pumping.
The acoustic background noise levels vary from a start of -30 dropping at
05secs to -40 and to -43 at 15secs. At 36 secs, the background level goes u=
p
again taking the next call into limiting.
Digital noise is in the lowest 2-3 bits out of 15 (plus parity bit) and is=
therefore at -12 times 6dbs or -72dB. This means that you could under-recor=
d
by peaking low, say to -20dB and so avoiding overload/limiter effects while=
still not adding recorder noise. You can adjust levels on playback but you=
can't undo limiter artifacts. Listening to the HF frequencies only, there i=
s
also considerable enharmonic distortion (modulation distortion) on the main=
calls.
The joy od digital is the wide dynamic range, so there is no need to push
levels up while recording as with tape.
I also tried my favourite noise reduction settings on it and it destroyed
the natural ambience of the recording which is good.
David Brinicombe
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