That is absolutely fascinating, and I could hear the effect very well, even
through simple computer speakers.
Perhaps the mosquitoes are attuned to the human voice since it implies a
source of food (i.e. our blood)? Whatever the cause, it is very interesting
- thank you for posting it!
Ray
On Fri, Aug 3, 2012 at 9:49 AM, Hans Christian <> wrote:
> **
>
>
> Hi all
>
> Recently I was out in the Nationalpark Thy in Northern Denmark, to record
> ambiences just after sunset, when I came across an extremely weak
> humming-sound. Barely audible without the recorder gain at max. It turned
> out to be hundreds of mosquitoes inside a small forest. I started
> recording, and then when I made the announcement into the mic, I noticed
> the mosquito-hum raising in pitch for a short moment. I made different
> experiments, and it seemed they only reacted to my voice each time, and n=
ot
> any other sounds I made.
>
> Has anyone come across that phenomenon? Is it a known fact that mosquitos
> can "hear" humans, and distinguish them from other sounds? I've never hea=
rd
> of that.
>
> I put up the recording on SoundCloud, but it probably requires some good
> headphones to hear the phenomenon:
>
> http://snd.sc/NqgQhY
>
> (I speak to the mosquitoes in danish, but don't bother. I'm not saying
> anything very intelligent anyway. After all, they are only mosquitoes...)
>
> Hans Kock
>
>
>
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