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Re: Cassowary calls may be lowest bird calls

Subject: Re: Cassowary calls may be lowest bird calls
From: Wild Sanctuary <>
Date: Wed, 29 Oct 2003 15:54:41 -0800
Send a short .wav file, Rich, and I'll check it out, here, on the GWI
system. Sometimes recordings create an artifact that looks like a
sub-harmonic but is really a "ghost" signal created by wierd sums and
differences.

Bernie Krause

Wild Sanctuary, Inc.
P. O. Box 536
Glen Ellen, CA 95442
707-996-6677 tel
707-996-0280 fax
http://www.wildsanctuary.com

>They speak of calls of 18 hz.  I asked and didn't get a response on
>if the grouse I recorded with a signature to 1/2 hz was accurate.
>I have now asked Adobe if the spectral display is correct.
>Maybe they (wcs.org) are speaking of voice calls at 18 hz but if so I
>don't understand the body mechanics of that. The lowest I have in
>voice recorded to date is the Great Gray Owl.
>
>Rich Peet
>
>
>--- In  Doug Von Gausig <>
>wrote:
>>  See http://wcs.org/7411/?art=3D110481374. Some dinosaur folks are
>thinking
>>  that the subsonic calls of the Cassowary may be very similar and
>>  pleisiomorphic to the calls that Dinosaurs used to communicate...
>>
>>  Doug
>>  Doug Von Gausig
>>  Clarkdale, Arizona, USA
>>  Moderator
>>  Nature Recordists e-mail group
>>  http://groups.yahoo.com/group/naturerecordists
>
>
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