Lucas has some wonderful insights, Jim. Especially the signal shifting
idea in bird-vox reception and processing that may explain how certain
avian species might be creating artificial bandwidth after the
fact...a missed feature when concentrating on the decontextualized
signatures of individual birds or other critters (that may be doing
something similar). His thesis is an important element of my new book.
Bernie
On Jul 22, 2011, at 7:55 AM, Jim Morgan wrote:
> Thanks again Bernie, your comments about Jeff Lucas and his work.
>
> Here is a web page on Jeff Lucas that some of you might be
> interested in.
>
> http://www.bio.purdue.edu/people/faculty/index.php?refID=3D27
>
> Jim
>
> On Wed, Jul 20, 2011 at 9:01 AM, Bernie Krause <
> >wrote:
>
>> **
>>
>>
>> Fascinating to see how much energy is expressed between 6 & 10kHz,
>> Jim. And there's a lot of information, there, for sure.
>>
>> Jeff Lucas (Purdue University) has demonstrated that species he's
>> been looking at actually have the ability to pitch- and time-shift
>> when receiving signals so that what they hear would tend to fit
>> within
>> the biophonic structure of the given habitat they occupy.
>>
>> Bernie
>>
>>
>> On Jul 20, 2011, at 8:27 AM, Jim Morgan wrote:
>>
>>> I find it difficult to fully appreciate the complexity of the
>>> Grasshopper
>>> Sparrow's song. To my ears, and they suffer from old age, the song
>>> sounds
>>> like an ordinary insect buzz. Of course this is the reason it is
>>> caller a
>>> grasshopper Sparrow.
>>>
>>> Anyway I am posting a spectrogram if it's song and it sure doesn't
>>> look like
>>> a simple buzz. Instead you see a very complex series of different
>>> notes,
>>> many of which I cant even hear.
>>>
>>> When I look at the spectrogram I get a better appreciate the effort
>>> this
>>> little bird puts into it's song.
>>>
>>> So for those of you that are interested here is the spectrogram:
>>>
>>>
>> https://picasaweb.google.com/fundador.photos/Temp?authkey=3DGv1sRgCKzpsJ=
LJ27HcMQ
>>> #5631299589922746226
>>>
>>> Jim Morgan
>>> Prescott, AZ
>>>
>>>
>>>
>>>
>>>
>>> ------------------------------------
>>>
>>> "While a picture is worth a thousand words, a
>>> sound is worth a thousand pictures." R. Murray Schafer via Bernie
>>> Krause.
>>>
>>> Yahoo! Groups Links
>>>
>>>
>>>
>>>
>>
>> Wild Sanctuary
>> POB 536
>> Glen Ellen, CA 95442
>> 707-996-6677
>> http://www.wildsanctuary.com
>>
>> Google Earth zooms: http://earth.wildsanctuary.com
>> SKYPE: biophony
>>
>>
>>
>
>
>
>
>
> ------------------------------------
>
> "While a picture is worth a thousand words, a
> sound is worth a thousand pictures." R. Murray Schafer via Bernie
> Krause.
>
> Yahoo! Groups Links
>
>
>
>
Wild Sanctuary
POB 536
Glen Ellen, CA 95442
707-996-6677
http://www.wildsanctuary.com
Google Earth zooms: http://earth.wildsanctuary.com
SKYPE: biophony
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