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Tuesday, September 20, 2011

DOLPHIN-HUMAN BEINGS COMMUNICATION

WATCH    VIDEO. NYT

Denise Herzing, who works with dolphins at The Wild Dolphin Project (Bahamas) and Jupiter (Florida), has spent most of his last 25 years, filming videos of dolphins, looking for food,  playing and others, coming to have a growing database that provide a very intimate view on how they teach their children to find food. It is known that dolphins communicate among them using 3 types of sounds: 1) Whistles, to identify each other (like  names). 2) Clicks to navigate and find food by echolocation 3) Burst pulses -gross sounds- combination of  previous sounds. Researchers believe that there is additional information encoded in these sounds as well as in other ultra-high frequency sounds, inaudible to humans.

 

Herzing will try the next year to broaden this kind of  communication with dolphins  testing  a 2-way  system employing underwater computers that can mimic sounds of dolphins, differentiate  and recorded them in real time, as dolphins  rarely open their mouths. In the new system 2 human divers placed in front of  dolphins, make   synthesized  whistles,  passing then from hand to hand scarves or pieces of  seaweeds  to establish sound-object associations. Dolphins then imitate the sound  asking  for certain objects  to start a game. Until now man-animal communication is only one way. Herzing, hopes to develop a crude vocabulary for objects and actions with this  system.
COMUNICACION    ENTRE      DELFINES  Y HUMANOS
Denise Herzing, que trabaja con delfines en The Wild Dolphin Project (Bahamas) y en   Jupiter (Florida), ha pasado la   mayor parte de sus últimos  25 años,  filmando  videos de  delfines, buscando comida, realizando cortejos o jugando, llegando a poseer   una  creciente base de datos que proporcionan vistas  muy intimas acerca de   como estos  enseñan a sus hijos a hallar comida. Se  sabe  que los delfines  se comunican mediante  3 tipos de sonidos : 1) Silbidos, para identificarse entre si (como  nombres).  2) Clicks,  para navegar y encontrar  comida mediante ecolocacion 3) Burst pulses, sonidos groseros mezcla de los anteriores. Los  investigadores creen que existe  informacion adicional codificada en estos sonidos al igual  que en otros de   super-elevada frecuencia, inaudible  en   humanos.   
Herzing intentará el próximo año ampliar su base de comunicación con los delfines ensayando un sistema  2 vias con ayuda de  computadoras submarinas capaces de imitar  sonidos de  delfines,  diferenciándolos y registrándolos en   tiempo  real,  ya que  estos  raramente abren sus bocas.  En el nuevo sistema 2 buzos humanos colocados frente a los   delfines, hacen sonar  primero  silbidos sintetizados,  pasando luego de mano en mano chalinas o segmentos de algas  a fin de establecer  asociaciones  sonido-objeto. Los delfines imitan entonces el  sonido para pedir determinados objetos o  iniciar algún  juego.  Hasta hoy las comunicaciones hombre- animal son de una sola via. Herzing, espera  desarrollar con este sistema un vocabulario crudo para objetos y acciones.  

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