Thought this might be interesting.
http://www.acoustics.org/press/163rd/Mishima_2aAO5.html
Underwater broadband speakers for dolphins. Range from about 6kHz to 170Khz
http://www.acoustics.org/press/163rd/Mishima_2aAO5.html
Underwater broadband speakers for dolphins. Range from about 6kHz to 170Khz
Cool...
But I see an opportunity to improve them, almost sonar, they need to fit a
On Nat Geo recently there was an interesting program on Dolphin Intelligence, not as high as originally thought as a lot of their brain mass consists of cells to keep the brain warm. Great program, just like a thread on here, one set against the other. The Dolphin huggers were aghast at the new research.
Myself I have always campaigned for 'Tuna friendly Dolphin' which causes some controversy when I interact with the hardcore save the animals types. But my view is shouldn't we treat all critter the same.
But I see an opportunity to improve them, almost sonar, they need to fit a
On Nat Geo recently there was an interesting program on Dolphin Intelligence, not as high as originally thought as a lot of their brain mass consists of cells to keep the brain warm. Great program, just like a thread on here, one set against the other. The Dolphin huggers were aghast at the new research.
Myself I have always campaigned for 'Tuna friendly Dolphin'
which causes some controversy when I interact with the hardcore save the animals types. But my view is shouldn't we treat all critter the same.
Name Calling...
Scientists have found further evidence that dolphins call each other by "name".
Research has revealed that the marine mammals use a unique whistle to identify each other.
BBC News - Dolphins 'call each other by name'
Dan.
Scientists have found further evidence that dolphins call each other by "name".
Research has revealed that the marine mammals use a unique whistle to identify each other.
BBC News - Dolphins 'call each other by name'
Dan.
That's what I was wondering. Water has a vastly different acoustical impedance than air.
But here in "everything else" I'm sure the technical part of the discussion will fade in and out.
Wondering if there's any truth to the rumor that audiophiles are chewy and rubbery.
Piezo composite (For that is what it surely is) transducers do not match at all well to air, at least not without a massive amount of horn loading (Or something funky like some sort of flexture tensional device), and are not all that broadband without some fairly heroic matching networks which tend to cause the phase response to end up all over the shop.
Can you get audio out of them? Sure you can (And I have), but almost anything else is easier.
I would note that the ~160dB re 1uPa is actually deeply unimpressive as sonar transducers go and hints that there is a substantial resistor in the matching network to kill much of the Q.
Regards, Dan.
Can you get audio out of them? Sure you can (And I have), but almost anything else is easier.
I would note that the ~160dB re 1uPa is actually deeply unimpressive as sonar transducers go and hints that there is a substantial resistor in the matching network to kill much of the Q.
Regards, Dan.
Soft and fluffy with a crunchy exterior, like a half baked meringue
Or like armadillo.
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