The US Navy actually tried match-to-sample tech on their Trident subs=85veh=
icles that sometimes had over 3200 hydrophones embedded in the hull=85in th=
e 1970s and 1980s. During that period they tried to ID whale vox and severa=
l hundred signatures of fish to compare to the signatures of Soviet subs. D=
idn't work 'cause there were too many variations within each species and, a=
ltho, they still use something similar, it is still problematic in many ins=
tances. They could never overcome the problem introduced by Doppler shift=
=85objects moving at different speeds toward or away from each other.
Bernie
On Jul 16, 2013, at 6:29 PM, Peter Shute <> wrote:
> I assume there are many people working on automatic species recognition, =
but I don't know how reliable it is yet. I thought they still required veri=
fication by humans.
>
> But just the fact that recordings are being made and kept is a good thing=
. Maybe someone with as much resources as Google could do the initial analy=
sis, and make the tagged sections of the recordings available for us to lis=
ten to. But imagine the outrage - first they photograph all of our houses, =
then they make continuous recordings.
>
> It's an interesting field, and it would be good if anyone here with knowl=
edge of it could fill us in on it.
>
> Peter Shute
>
>> -----Original Message-----
>> From:
>> On Behalf Of wildambience
>> Sent: Wednesday, 17 July 2013 9:11 AM
>> To:
>> Subject: [Nature Recordists] Article: "New Technology Tracks
>> Species by Their Sounds"
>>
>>
>>
>> Interesting article from Nature World News -
>> http://www.natureworldnews.com/articles/3001/20130716/new-tech
>> nology-tracks-species-sounds.htm
>>
>> It got me thinking of the potential of this type of
>> technology. As each species has unique calls which could be
>> interpreted as unique visual patterns on a spectrogram, these
>> visuals could be automatically scanned and interpreted to
>> produce data on species distribution and abundance, much the
>> same way as one can search by image on Google or Tineye.
>>
>> Snippet - "A new cyber infrastructure developed by scientists
>> enables real-time acoustic recording and automatic species
>> identification in remote locations of the world, offering
>> anyone in the world quick and easy access of not only what
>> creatures inhabit a given area, but how many of them there
>> are - a key to measuring nature's response to on-going
>> climate change and human invasion."
>
>
> ------------------------------------
>
> "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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