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Re: ants

Subject: Re: ants
From: Gianni Pavan <>
Date: Mon, 21 Jun 2004 22:00:56 +0200
Hi Rich,
         I don't understand what is your goal. Just to have a sensor to 
detect their movements or are you interested in their communicative sounds ?

In the past I recorded many species able to stridulate. I made recordings 
with a B&K 4135 microphone connected to a high sampling rate board. 
Microphone was placed very close to the ants (less than 1 cm); pulses 
extended up to 70-90 kHz depending on the species and it was interesting to 
see disyllabic chirps with pulses of opposite phase in the two sub-units.
Pulse rates where, in any case, in the audible region, though sounds where 
so weak it was not possible to hear them. If you're interested in more 
details or in getting copies of the papers, please write me privately.

Gianni


At 20.11 21/06/2004, you wrote:
>I don't have a clue what is going on in this recording.
>
>I have been playing with piezo's a bit.
>The linked recording is from putting one in a ant mound.
>The ants were about 1/8" and the hill about 1/2" tall.
>The clicks are when they walk on the pickup.
>The roar is the minidisc motor on the ground about 2 feet away.
>They don't seem to happy with my mic being there.
>
>I obviously have some more work to do on a resonator to even out some
>freqs but thought the mad ants were kind a neat and I have not seen
>many posts on micro targets.
>
>200kb download
>http://home.comcast.net/~richpeet/ant.mp3
>
>Rich
>
>
>
>
>"Microphones are not ears,
>Loudspeakers are not birds,
>A listening room is not nature."
>Klas Strandberg
>Yahoo! Groups Links
>
>
>
>

--------------------------------------------------------------
Gianni Pavan
Email 
Centro Interdisciplinare di Bioacustica e Ricerche Ambientali
Universita' degli Studi di Pavia
Via Taramelli 24, 27100 PAVIA, ITALIA
Tel        +39-0382-507874
Fax        +39-02-700-32921
Web       http://www.unipv.it/cibra




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