audible underwater signal
1Underwater 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… …
2Sound from ultrasound — Contents 1 Parametric array 2 Applications 2.1 Commercial advertising …
3Loudspeaker — For other uses, see Loudspeaker (disambiguation). An inexpensive, low fidelity 3½ inch speaker, typically found in small radios …
4Microphone — For the indie film, see Microphone (film). Microphones redirects here. For the indie band, see The Microphones. A …
5Modulated ultrasound — Ultrasound can be modulated to carry an audio signal (like radio signals are modulated). This is often used to carry messages underwater, in underwater diving communicators, and short range (under five miles) communication with submarines; the… …
6Life Sciences — ▪ 2009 Introduction Zoology In 2008 several zoological studies provided new insights into how species life history traits (such as the timing of reproduction or the length of life of adult individuals) are derived in part as responses to… …
7Toronto subway and RT — A T series train at Sheppard–Yonge station on the Sheppard line …
8MythBusters (2005 season) — Country of origin Australia United States No. of episodes 26 (includes 7 specials) Broadcast Original channel Discovery Channel …
9Ocean acoustic tomography — The western North Atlantic showing the locations of two experiments that employed ocean acoustic tomography. AMODE, the Acoustic Mid Ocean Dynamics Experiment (1990 1), was designed to study ocean dynamics in an area away from the Gulf Stream,… …
10Electrical telegraph — A printing electrical telegraph receiver, and a transmitter key at bottom right An electrical telegraph is a telegraph that uses electrical signals, usually conveyed via telecommunication lines or radio. The electromagnetic telegraph is a device… …
