naturerecordists
[Top] [All Lists]

[Nature Recordists] Re: beginner needs help with recording

To:
Subject: [Nature Recordists] Re: beginner needs help with recording
From: DIANE <>
=C2=A0
Thanks for responding David, I will try audacity.
Do you think the batteries in the mic are contributing to the hiss?
Diane

--- In  "Avocet" <> wrote:
>
> > I realize that all of you have been doing this at a high level for
> > some time
>
> Diane,
>
> Yes, but we may not all admit to it. :-)
>
> I have a routine for de-hissing using the free Audacity 2.0. You
> select a sample of the quietest bit of the recording. I then put this
> through a bass roll-off filter which gives a rounded slope of 6 dB per
> octave (on my web site):
> http://www.stowford.org/sounds/eqcurvesadd.txt
> HPF800-2-4-6nr
>
> I can post a graphic of the curve if this doesn't make sense.
>
> What this does is to make artifacts disappear into the backgroud noise
> without producing tinkling.
>
> In Audacity 2.0*,
> http://audacity.sourceforge.net/download/
> put this sample into "Effects - Noise Removal", restore the original
> (CTRL-Z), select all and run "Noise Removal" with:
> -0dB
> 500 Hz
> Try various attack times if you can hear the difference.
>
> If you have an extreme example, take a new sample and do it again
> rather than go more than -9dB. It will sound artificial but helps with
> species recognition in dodgy recordings.
>
> David
>
> David Brinicombe
> North Devon, UK
> Cogito cogito ergo cogito sum - Ambrose Bierce
>











<Prev in Thread] Current Thread [Next in Thread>
Admin

The University of NSW School of Computer and Engineering takes no responsibility for the contents of this archive. It is purely a compilation of material sent by many people to the naturerecordists mailing list. It has not been checked for accuracy nor its content verified in any way. If you wish to get material removed from the archive or have other queries about the archive e-mail Andrew Taylor at this address: andrewt@cse.unsw.EDU.AU