Passive acoustics is the action of listening for sounds, often at specific frequencies or for purposes of specific analyses.
As applied to underwater acoustics, also termed
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Underwater acoustics — The field of underwater acoustics is closely related to a number of other fields of acoustic study, including sonar, transduction, acoustic signal processing, acoustical oceanography, bioacoustics, and physical acoustics.HistoryUnderwater sound… … Wikipedia
Loudspeaker acoustics — is a subfield of acoustical engineering concerned with the reproduction of sound and the parameters involved in doing so in actual equipment. Engineers measure the performance of drivers and complete speaker systems to characterize their behavior … Wikipedia
Sonar — This article is about underwater sound propagation. For atmospheric sounding, see SODAR. For other uses, see Sonar (disambiguation) … Wikipedia
Hydroacoustics — is a general term for the study and application of sound in water. The term comes from Greek υδρο, water, and ακουστική, acoustics. Hydroacoustics, utilizing SONAR technology, is most commonly used for detection, assessment, and monitoring of… … Wikipedia
USS Barracuda (SSK-1) — USS Barracuda (SSK 1), the lead ship of her class, was the second ship of the United States Navy to be named for the barracuda, a voracious, pike like fish. Her keel was laid down on 1 July 1949 by the Electric Boat Division of General Dynamics… … Wikipedia
USS Bonita (SSK-3) — USS Bonita (SSK 3/SS 552), a Barracuda class submarine, was the fourth ship of the United States Navy to be named for the bonito, any of several types of fish, including the skipjack tuna, Katsuwonus pelamis , the Atlantic bonito ( Sarda sarda ) … Wikipedia
USS Bass (SSK-2) — USS Bass (SSK 2/SS 551), a Barracuda class submarine, was the second ship of the United States Navy to be named for the bass, an edible, spiny finned fish. Bass was laid down by the Mare Island Naval Shipyard. She was launched on 2 May 1951 as K… … Wikipedia
List of submarine classes of the United States Navy — Submarines of the United States Navy are built in classes, using a single design for a number of boats. Minor variations occur as improvements are incorporated into the design, so later boats of a class may be more capable than earlier. Also,… … Wikipedia
Loudspeaker — For other uses, see Loudspeaker (disambiguation). An inexpensive, low fidelity 3½ inch speaker, typically found in small radios … Wikipedia
Studio monitor — This article is about studio reference loudspeakers. For onstage monitor speakers for live performances, see foldback (sound engineering). Not to be confused with Broadcast reference monitor. Studio monitors, also called reference monitors, are… … Wikipedia
