acoustical power

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• Acoustical measurements and instrumentation — Analysis of sound and acoustics plays a role in such engineering tasks as product design, production test, machine performance, and process control. For instance, product design can require modification of sound level or noise for compliance with …   Wikipedia

• Paul D. Scully-Power — Infobox Astronaut name =Paul Desmond Scully Power type =U.S. Navy Payload Specialist nationality =American date birth =May 28, 1944 place birth =Sydney, Australia occupation =Oceanographer selection =1984 NASA Group time =8d 05h 23m mission =STS… …   Wikipedia

• Sound power level — or acoustic power level is a logarithmic measure of the sound power in comparison to a specified reference level.The sound power level of a signal with sound power W is [ [http://hep.physics.indiana.edu/ rickv/Sound intensity.html Sound Power,… …   Wikipedia

• Sound reinforcement system — A sound reinforcement system is an arrangement of microphones, electronic signal processors, amplifiers, and loudspeakers that makes live or pre recorded sounds usually music or speech louder, or that distributes the sound to a larger or more… …   Wikipedia

• MUSIC — This article is arranged according to the following outline: introduction written sources of direct and circumstantial evidence the material relics and iconography notated sources oral tradition archives and important collections of jewish music… …   Encyclopedia of Judaism

• Compression driver — A compression driver is a type of loudspeaker driver which uses the technique of compression to achieve high efficiencies. In this context compression refers to the fact that the area of the loudspeaker diaphragm is significantly larger than the… …   Wikipedia

• History of radar — The history of radar starts with experiments by Heinrich Hertz in the late 19th century that showed that radio waves were reflected by metallic objects. This possibility was suggested in James Clerk Maxwell s seminal work on electromagnetism.… …   Wikipedia

• architecture — /ahr ki tek cheuhr/, n. 1. the profession of designing buildings, open areas, communities, and other artificial constructions and environments, usually with some regard to aesthetic effect. Architecture often includes design or selection of… …   Universalium

• Noise regulation — includes statutes or guidelines relating to sound transmission established by national, state or provincial and municipal levels of government. After the watershed passage of the United States Noise Control Act of 1972,[1] other local and state… …   Wikipedia

• Quad Electroacoustics — Infobox Company company name = QUAD ELECTROACOUSTICS LIMITED company type = private limited company foundation = September 14, 1978 location = Huntingdon, Cambridgeshire, England key people = industry = Home entertainment equipment manufacturing… …   Wikipedia

• Ocean 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,… …   Wikipedia