For what it's worth, Rich, I've managed to get elephant (and hippo,
and giraffe) infrasound using my hydrophone as a mic and running it
into a Sony TCD D-10 PRO II DAT recorder. Got down to 13Hz with that
process (as measured on a GWI spectrogram).
Bernie
Wild Sanctuary, Inc.
P. O. Box 536
Glen Ellen, CA 95442
707-996-6677 tel
707-996-0280 fax
http://www.wildsanctuary.com
>I sure hope this means what it appears to mean.
>
>akg has long ignored low noise mics. They have the knowledge and
>resources but their stuff has not come up to par over the years.
>Maybe know they will look at something other than near field.
>
>As far as if their mics can do it? I posted on this group a sound
>recorded with a me-62 and a consumer md that documented 1/2 cycle
>detection a couple months back. So sure (or shure)it can do it. An
>akg can not do what my mkh-110-1 can do but I am sure that they can
>resolve an elephant.
>
>I just want more out of akg than they currently sell.
>
>Rich Peet
>
>--- In "Robair, Gino"
><> wrote:
>> Hi y'all,
>> This came over the wire last week from AKG in the form of an AES
>press release (which is obvious in the final paragraph ). Thought I'd
>share it with the group anyway (I am not connected with AKG, nor do
>endorse its products. Purely FYI only).
>> ginorobair
>> *^*^*^*
>>
>> TONS OF CHARM
>> AKG Microphones for Infrasound Recording
>>
>> NASHVILLE, TN-October 10, 2003-Imagine hugging a stuffed animal
>with a shoulder height of about 4 feet and weighing about 500 pounds!
>Mongu, the second baby elephant born at the Sch=F6nbrunn Zoo in Vienna
>within three years, enchants visitors with its clumsy charm.
>>
>> In 2001, Abu, the first baby elephant born at the Sch=F6nbrunn Zoo,
>had been a much-admired sensation already. Mongu was born in May,
>2003. Standing about three feet tall and weighing 207 pounds, the
>baby was dwarfed by his mother weighing several tons.
>>
>> While Abu had been the result of artificial insemination, Mongu
>owed his existence to perfectly natural mating among members of the
>elephant herd at Schoenbrunn, another success of the large natural
>habitat the Zoo had created for the elephants.
>>
>> The zoologist Angela St=F6ger-Horwath is working on a study on the
>language of elephants that she will also use as the basis for her
>doctoral thesis. What vocabulary do these intelligent giants have at
>their command, and what sounds do they use to communicate and,
>specifically, in bringing up their young?
>>
>> Angela spent months near the elephants recording their sounds using
>two AKG C 480 B comb-ULS + CK 69 and CK2 capsules, and K 171 Studio
>headphones. The sounds were then evaluated at the institute.
>>
>> Professor Helmut Kratochvil, head of the research project
>explained, "Infrasound includes mechanical vibrations and waves at
>frequencies below 16 Hz that cannot be perceived by the human ear but
>are very similar to sound in their physical behavior. The fundamental
>frequencies of an elephant's sounds correlate with the animal's level
>of excitement. Low frequency growling and similar sounds are
>equivalent to a low level of excitement and are used to keep the
>group together and in normal communication. Higher frequencies
>indicate higher levels of excitement and usually accompany aggressive
>behavior. These sounds include trumpeting, roaring, and shouting."
>>
>> Norbert Sobol, Product Marketing Manager, Professional Products,
>adds, "When designing the ULS Series we aimed at creating one of the
>best small-diaphragm microphones in the world with ultra-linear
>electrical transfer characteristics. While the original C 460 B
>preamp used an output transformer, the later C 480 B is a
>transformerless model that gives excellent results at very low
>frequencies when used with an omnidirectional capsule. Projects like
>this one, where the microphone is even used for infrasound recording,
>demonstrate that we achieved our goal and the AKG ULS Series is on a
>par with much more expensive measurement microphones for this kind of
>application."
>
>
>
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