Acoustic telegraph
Acoustic A*cous"tic (#; 277), a. [F. acoustique, Gr. ? relating to hearing, fr. ? to hear.] Pertaining to the sense of hearing, the organs of hearing, or the science of sounds; auditory. [1913 Webster]

{Acoustic duct}, the auditory duct, or external passage of the ear.

{Acoustic telegraph}, a telegraph making audible signals; a telephone.

{Acoustic vessels}, brazen tubes or vessels, shaped like a bell, used in ancient theaters to propel the voices of the actors, so as to render them audible to a great distance. [1913 Webster]


The Collaborative International Dictionary of English. 2000.

Look at other dictionaries:

  • Acoustic telegraph — Telegraph Tel e*graph, n. [Gr. ? far, far off (cf. Lith. toli) + graph: cf. F. t[ e]l[ e]graphe. See {Graphic}.] An apparatus, or a process, for communicating intelligence rapidly between distant points, especially by means of preconcerted… …   The Collaborative International Dictionary of English

  • Acoustic Telegraph — The Acoustic Telegraph was a method for multiplexing (transmitting more than one) signal on a single telegraph wire. It used signals at different acoustic frequencies. A telegrapher used a conventional Morse key to tap out the message, the key… …   Wikipedia

  • Acoustic telegraphy — was also known as harmonic telegraphy. During the 1800s inventors tried to find ways of sending multiple telegraph messages simultaneously over a single telegraph wire by using different audio frequencies for each message. These inventors… …   Wikipedia

  • Telegraph — Tel e*graph, n. [Gr. ? far, far off (cf. Lith. toli) + graph: cf. F. t[ e]l[ e]graphe. See {Graphic}.] An apparatus, or a process, for communicating intelligence rapidly between distant points, especially by means of preconcerted visible or… …   The Collaborative International Dictionary of English

  • Telegraph cable — Telegraph Tel e*graph, n. [Gr. ? far, far off (cf. Lith. toli) + graph: cf. F. t[ e]l[ e]graphe. See {Graphic}.] An apparatus, or a process, for communicating intelligence rapidly between distant points, especially by means of preconcerted… …   The Collaborative International Dictionary of English

  • Acoustic — A*cous tic (#; 277), a. [F. acoustique, Gr. ? relating to hearing, fr. ? to hear.] Pertaining to the sense of hearing, the organs of hearing, or the science of sounds; auditory. [1913 Webster] {Acoustic duct}, the auditory duct, or external… …   The Collaborative International Dictionary of English

  • Acoustic duct — Acoustic A*cous tic (#; 277), a. [F. acoustique, Gr. ? relating to hearing, fr. ? to hear.] Pertaining to the sense of hearing, the organs of hearing, or the science of sounds; auditory. [1913 Webster] {Acoustic duct}, the auditory duct, or… …   The Collaborative International Dictionary of English

  • Acoustic vessels — Acoustic A*cous tic (#; 277), a. [F. acoustique, Gr. ? relating to hearing, fr. ? to hear.] Pertaining to the sense of hearing, the organs of hearing, or the science of sounds; auditory. [1913 Webster] {Acoustic duct}, the auditory duct, or… …   The Collaborative International Dictionary of English

  • Acoustic enhancement — is a subtle type of sound reinforcement system used to augment direct, reflected, or reverberant sound. While sound reinforcement systems are usually used to increase the sound level of the sound source (like a person speaking into a microphone,… …   Wikipedia

  • Acoustic Kitty — was a CIA project launched by the Directorate of Science Technology in the 1960s attempting to use cats in spy missions, intended to spy on the Kremlin, and Soviet embassies. A battery and a microphone were implanted into a cat and an antenna… …   Wikipedia

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