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Songs From the Sea: Deciphering Dolphin Language With Picture Words

December 30, 2008

CUMBRIA, England and FORT LAUDERDALE, Florida, December 30 /PRNewswire/

– Key Words: Dolphin, Cetacean, Acoustics, Holography, Language, CymaScope

In an important breakthrough in deciphering dolphin language, researchers
in Great Britain and the United States have imaged the first high definition
imprints that dolphin sounds make in water.

The key to this technique is the CymaScope, a new instrument that reveals
detailed structures within sounds, allowing their architecture to be studied
pictorially. Using high definition audio recordings of dolphins, the research
team, headed by English acoustics engineer, John Stuart Reid, and
Florida-based dolphin researcher, Jack Kassewitz, has been able to image, for
the first time, the imprint that a dolphin sound makes in water. The
resulting “CymaGlyphs,” as they have been named, are reproducible patterns
that are expected to form the basis of a lexicon of dolphin language, each
pattern representing a dolphin ‘picture word.’

Certain sounds made by dolphins have long been suspected to represent
language but the complexity of the sounds has made their analysis difficult.
Previous techniques, using the spectrograph, display cetacean (dolphins,
whales and porpoises) sounds only as graphs of frequency and amplitude. The
CymaScope captures actual sound vibrations imprinted in the dolphin’s natural
environment-water, revealing the intricate visual details of dolphin sounds
for the first time.

Within the field of cetacean research, theory states that dolphins have
evolved the ability to translate dimensional information from their
echolocation sonic beam. The CymaScope has the ability to visualize
dimensional structure within sound. CymaGlyph patterns may resemble what the
creatures perceive from their own returning sound beams and from the sound
beams of other dolphins.

Reid said that the technique has similarities to deciphering Egyptian
hieroglyphs. “Jean-Francois Champollion and Thomas Young used the Rosetta
Stone to discover key elements of the primer that allowed the Egyptian
language to be deciphered. The CymaGlyphs produced on the CymaScope can be
likened to the hieroglyphs of the Rosetta Stone. Now that dolphin chirps,
click-trains and whistles can be converted into CymaGlyphs, we have an
important tool for deciphering their meaning.”

Kassewitz, of the Florida-based dolphin communication research project
SpeakDolphin.com said, “There is strong evidence that dolphins are able to
‘see’ with sound, much like humans use ultrasound to see an unborn child in
the mother’s womb. The CymaScope provides our first glimpse into what the
dolphins might be ‘seeing’ with their sounds.”

The team has recognized that sound does not travel in waves, as is
popularly believed, but in expanding holographic bubbles and beams. The
holographic aspect stems from the physics theory that even a single molecule
of air or water carries all the information that describes the qualities and
intensity of a given sound. At frequencies audible to humans (20 Hertz to
20,000 Hertz) the sound-bubble form dominates; above 20,000 Hertz the shape
of sound becomes increasingly beam shaped, similar to a lighthouse beam in
appearance.

Reid explained their novel sound imaging technique: “Whenever sound
bubbles or beams interact with a membrane, the sound vibrations imprint onto
its surface and form a CymaGlyph, a repeatable pattern of energy. The
CymaScope employs the surface tension of water as a membrane because water
reacts quickly and is able to reveal intricate architectures within the sound
form. These fine details can be captured on camera.”

Kassewitz has planned a series of experiments to record the sounds of
dolphins targeting a range of objects. Speaking from Key Largo, Florida, he
said, “Dolphins are able to emit complex sounds far above the human range of
hearing. Recent advances in high frequency recording techniques have made it
possible for us to capture more detail in dolphin sounds than ever before. By
recording dolphins as they echolocate on various objects, and also as they
communicate with other dolphins about those objects, we will build a library
of dolphin sounds, verifying that the same sound is always repeated for the
same object. The CymaScope will be used to image the sounds so that each
CymaGlyph will represent a dolphin ‘picture word’. Our ultimate aim is to
speak to dolphins with a basic vocabulary of dolphin sounds and to understand
their responses. This is uncharted territory but it looks very promising.”

Dr. Horace Dobbs, a leading authority on dolphin-assisted therapy, has
joined the team as consultant. “I have long held the belief that the dolphin
brain, comparable in size with our own, has specialized in processing
auditory data in much the same way that the human brain has specialized in
processing visual data. Nature tends not to evolve brain mass without a need,
so we must ask ourselves what dolphins do with all that brain capacity. The
answer appears to lie in the development of brain systems that require huge
auditory processing power. There is growing evidence that dolphins can take a
sonic ‘snap shot’ of an object and send it to other dolphins, using sound as
the transmission medium. We can therefore hypothesize that the dolphin’s
primary method of communication is picture based. Thus, the picture-based
imaging method, employed by Reid and Kassewitz, seems entirely plausible.”

The CymaGlyphs of dolphin sounds fall into three broad categories,
signature whistles, chirps and click trains. There is general agreement among
cetacean biologists that signature whistles represent the means by which
individual dolphins identify themselves while click trains are involved in
echolocation. Chirps are thought to represent components of language. Reid
explained the visual form of the various dolphin sounds, “The CymaGlyphs of
signature whistles comprise regular concentric bands of energy that resemble
aircraft radar screens while chirps are often flower-like in structure,
resembling the CymaGlyphs of human vocalizations. Click trains have the most
complex structures of all, featuring a combination of tightly packed
concentric bands on the periphery with unique central features.”

Regarding the possibility of speaking dolphin, Kassewitz said, “I believe
that people around the world would love the opportunity to speak with a
dolphin. And I feel certain that dolphins would love the chance to speak with
us – if for no other reason than self-preservation. During my times in the
water with dolphins, there have been several occasions when they seemed to be
very determined to communicate with me. We are getting closer to making that
possible.”

http://www.speakdolphin.com

http://www.cymascope.com

http://www.aeionline.com

SOURCE Sonic Age Ltd


Source: newswire