Dear all,
Thanks to Gianni, Anders, John, Caspar, Eric and Peter (sorry if I missed
anyone) for your responses. ALL very much appreciated.
So there is no missing out the grunt work it seems (am I surprised ?). But
amongst all your ideas I found most appealing:
1) using spectral view (duh - should've thought of that)
2) speeding up things (4x) using eyes and ears together
3) sampling
For my owls I would try 1) and 2). I think sampling is probably fine for day
time regular noises, but for an irregular night-time noise like an owl it may
be easy to miss between samples.
Several of you use a page skip function which is a great idea - I need to find
that on Audition.
Many thanks all, your time and experience much appreciated.
C
--- In "klangstrand" <>
wrote:
>
> I suggest reducing the fft window size. At least in Soundtrack Pro it enables
> me to view a longer sample at a time, and gives a smoother experience, since
> it takes away some of the strain on the processor.
> As of my understanding, I believe the resolution is only critical on lower
> frequencies. So a reduction in resolution and some tweaking of the frequency-
> and amplitude display, should point out any anomaly pretty quickly. I usually
> get 15 minutes worth of recordings on screen at a time, where most activity
> is fairly protruding.
> Lowering the resloution to, say 512, makes scrolling unproblematic.
> I may not fully understand the science of it, but in my experience this works
> pretty well.
> Best
> -A
>
>
> --- In Peter Shute <pshute@> wrote:
> >
> > I can see that it would be useful for short listing sections to include in
> > an edited version, but remember that the original request was for methods
> > of finding owl calls in long recordings.
> >
> > Peter Shute
> >
> > Sent from my iPad
> >
> > On 08/04/2013, at 11:14 PM, "rapsac" <rapsac@<rapsac@>> wrote:
> >
> >
> >
> > Well, you don't get much of an impression from a single fragment, but
> > you get a feeling for changes over time and if anything stands out you
> > can just stop skipping. It's not a great method but it saves the time of
> > trying to think of a smart solution ;)
> >
> > Caspar
> >
> > Peter Shute skrev 2013-04-08 12:46:
> > > Caspar, are you listening to a short burst every few seconds though the
> > > recording? What sort of impression can you get from a fraction of a
> > > second?
> > >
> > > Peter Shute
> > >
> > > Sent from my iPad
> > >
> > > On 08/04/2013, at 6:28 PM, "rapsac"
> > > <rapsac@<rapsac%40bredband.net><rapsac@<rapsac%40bredband.net>>>
> > > wrote:
> > >
> > >
> > >
> > > Hi,
> > >
> > > I first divide the recording into shorter manageable files, then scan
> > > them using Sound Forge by clicking through the waveform while playing
> > > back. With some practice you only need to listen to a fraction of a
> > > second for each "click".
> > >
> > > Caspar
> > >
> > > chrishails50 wrote 2013-04-07 18:20:
> > >> Dear all
> > >>
> > >> Related to my last question, I wonder if anyone has any great tricks for
> > >> reviewing long duration recordings ?
> > >>
> > >> I have over the years amassed enough reasonable mics and machines to
> > >> have at least two sets (and maybe a third) that can be left out
> > >> unattended overnight. I would like to survey my local woods and forests
> > >> and catch some of the owls that are out there that I have not yet
> > >> recorded.
> > >>
> > >> But my question is how to review an 8-10 hour session efficiently ? In
> > >> the past I have had them playing background whilst I do other tasks, but
> > >> normally I can only spend maybe 2 hours doing that. I then moved on to
> > >> scanning the waveform files (for night-time this works I think): I apply
> > >> a 100% notch filter below 600Hz to get rid of passing planes and boy
> > >> racers then scroll the waveform (I use Audition 3)and look for peaks
> > >> that could be interesting sounds. But as I have just discovered even
> > >> this takes a chunk of time if I have two machines running overnight.
> > >>
> > >> I know a real field guy would spend the night wandering the forest with
> > >> his parabola, but I have a day job too.....has anyone else faced this ?
> > >>
> > >> Thanks for any tips or ideas.
> > >>
> > >> Chris
> > >> http://www.wildechoes.org
> > >>
> > >>
> > >>
> > >> ------------------------------------
> > >>
> > >> "While a picture is worth a thousand words, a
> > >> sound is worth a thousand pictures." R. Murray Schafer via Bernie Krause.
> > >>
> > >> Yahoo! Groups Links
> > >>
> > >>
> > >>
> > >>
> > >
> > >
> > >
> > >
> > > ------------------------------------
> > >
> > > "While a picture is worth a thousand words, a
> > > sound is worth a thousand pictures." R. Murray Schafer via Bernie Krause.
> > >
> > > Yahoo! Groups Links
> > >
> > >
> > >
> > >
> >
>
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