hydrophone

/huy"dreuh fohn'/, n.
1. a device for locating sources of sound under water, as for detecting submarines by the noise of their engines.
2. an instrument employing the principles of the microphone, used to detect the flow of water through a pipe.
3. Med. an instrument used in auscultation, whereby sounds are intensified through a column of water.
[1855-60; HYDRO-1 + -PHONE]

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      device for converting sound waves into electrical signals, similar in operation to a microphone but used primarily for detecting sound waves from an underwater source, such as a submarine. Usually an array of hydrophones is employed to pinpoint the source: the array is connected to an electrical circuit that permits the phase differences of the sound waves at the various hydrophones to be compensated electrically. Thus, the whole array can be “steered” in the direction of the sound source without actual motion of the hydrophones.

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Universalium. 2010.

Look at other dictionaries:

  • hydrophone — [ idrɔfɔn ] n. m. • mil. XXe; de hydro et phone ♦ Techn. Transducteur électroacoustique utilisé pour l émission et la réception d ondes acoustiques dans l eau, que l on emploie en sismologie, dans la détection pétrolière, etc. ● hydrophone nom… …   Encyclopédie Universelle

  • hydrophone — [hī′drə fōn΄] n. [ HYDRO + PHONE] an instrument for detecting, and registering the distance and direction of, sound transmitted through water …   English World dictionary

  • Hydrophone — A hydrophone (Greek hydro = water and phone = sound ) is a microphone designed to be used underwater for recording or listening to underwater sound. Most hydrophones are based on a piezoelectric transducer that generates electricity when… …   Wikipedia

  • Hydrophone — Un hydrophone est un transducteur électroacoustique destiné à transformer, dans les liquides, des oscillations acoustiques en oscillations électriques. Ce type de transducteur est notamment utilisé dans les sonar. Exemple de modèle d hydrophone… …   Wikipédia en Français

  • hydrophone — noun Date: 1860 an instrument for listening to sound transmitted through water …   New Collegiate Dictionary

  • hydrophone — an underwater microphone …   Dictionary of ichthyology

  • hydrophone — noun a transducer that converts underwater sound waves into electrical signals, rather like a microphone …   Wiktionary

  • hydrophone — n. instrument that determines direction and distance of sound underwater …   English contemporary dictionary

  • hydrophone — noun a microphone which detects sound waves under water …   English new terms dictionary

  • hydrophone — hy·dro·phone …   English syllables

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