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Some Examples of Submarine Noise Detection Quelques exemples de détection de bruits sous-marins

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The sea noise has been schematised by using a white noise and a filter whose spectrum has a slope of −17 log ( is the frequency expressed in Hz). "Signals" have been generated in the same manner by using slopes ranging from −18 log to −20 log , etc., and we have measured the detection threshold of characteristic noises of different devices of a submarine in the presence of the synthesized ambiant noise. We have measured the detection rate of these signals presented alone, or at random during the same test.

French
On a schématisé le bruit de mer ambiant en transformant un bruit blanc par un filtre dont la fonction de transfert présente une pente en −17 log f (f étant la fréquence en Hz). Après avoir réalisé suivant le même modèle des "signaux" dont le spectre présente une pente comprise entre −18 log f et −30 log f, on a étudié la détection de ces signaux dans le bruit ambiant. On a ensuite mesuré le seuil de détection des bruits caractéristiques des divers éléments d'un sous-marin en présence d'un bruit de mer synthétique. On a également mesuré le pourcentage de détection des différents signaux présentés soit isolément, soit au hasard au cours d'un même test.
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Language: French

Document Type: Research Article

Publication date: 01 March 1998

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  • Acta Acustica united with Acustica, published together with the European Acoustics Association (EAA), is an international, peer-reviewed journal on acoustics. It publishes original articles on all subjects in the field of acoustics, such as general linear acoustics, nonlinear acoustics, macrosonics, flow acoustics, atmospheric sound, underwater sound, ultrasonics, physical acoustics, structural acoustics, noise control, active control, environmental noise, building acoustics, room acoustics, acoustic materials, acoustic signal processing, computational and numerical acoustics, hearing, audiology and psychoacoustics, speech, musical acoustics, electroacoustics, auditory quality of systems. It reports on original scientific research in acoustics and on engineering applications. The journal considers scientific papers, technical and applied papers, book reviews, short communications, doctoral thesis abstracts, etc. In irregular intervals also special issues and review articles are published.
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