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  • Guidelines for Specifying Underwater Electroacoustic Transducers
    or a. respectively. hydrophone has different meanings. Projectors. are usually driven near their resonance. Expectations from a transducer involve a. frequencies where they provide the highest. mixture of acoustical, electrical and mechanical. acoustic output. Hydrophones, on the other. considerations, such as beam
  • Spy On The Octopi: Students build submarine to track Giant Pacific Octopus
    a video camera and hydrophones to track its prey. Undergrads at Colorado School of Mines are developing the hydrophones that will create biaural hearing. This will let researchers determine the direction from which a sound originates. Shadow III completed 10 dives in Prince William Sound
  • Phase Conjugate Sonar
    . The customer has a generator hydrophone immersed in water that generates a high power pulse of sound with a central frequency of about 30 kHz. The generator is at the center of a circular arc on which eight receiver hydrophones are situated. The direct generated sound pulse travels at approximately
  • Lanthanum Modified PZT (PLZT)
    coercivity, higher coupling factors and reduced aging. Lanthanum modified lead zirconate titanate materials are applied in high sensitivity applications such as hydrophones, sounders and loudspeakers.
  • Lead Magnesium Niobate (PMN)
    (quadratically). These materials are used for hydrophones, actuators, receivers, projectors, sonar transducers and in micro-positioning devices. PMN forms solid solution alloys (PMN-PT) with lead titanate.
  • Barium Titanate (BT)
    useful for hydrophones and other receiving devices such as low-power projectors for fish-finder products.
  • Acoustic / Ultrasonic Transducers
    options, beam patterns, and power levels. Underwater acoustic transducers can contain both transmitters and receivers, or they can be solely transmitters used in conjunction with a hydrophone. They sense reflected sound and use distance and directional data for communication, mapping and navigation
  • Lead Zirconate Titanate (PZT)
    and raise the resistivity. These additives also enhance domain reorientation resulting in square hysteresis loops, low coercivity, higher coupling factors and reduced aging. Applied in high sensitivity applications such as hydrophones, sounders and loudspeakers.

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