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Acoustic fields; Algorithms; Bandwidth; Bit error rate; Estimation; Frequency estimation; Acoustic communications; Acoustic path; Acoustic response; Acoustic response function; Acoustic systems; Channel bandwidth; Channel dynamics; Combining method; Doppler; Estimation and compensation; Gaussian Mixture Model; Gaussian mixtures; Gaussian model; High frequency; Maximal path; Nova Scotia; Orthogonal signaling; Orthogonal signals; Per-symbol; Propagation media; Receiver algorithms; Recursive least square (RLS); Response functions; Shallow water acoustics; Signal duration; Single element; Temporal variability

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Acoustic impedance; Algorithms; Mathematical models; Optimization; Porosity; Porous materials; Viscous flow; Champoux-Allard model; Inverse characterization methods; Particular absorbing materials; Thermal characteristics

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Aproximadamente 18 registro(s) hasta el momento: (knowledge)

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Recurso libre

Hearing protectors - Calculations of the noise level at the protected ear
Behar, Alberto; IBBME, University of Toronto, Roseburgh Building, Toronto, Ont. M5S 3G9, Canada

Formato:	info:eu-repo/semantics/article, info:eu-repo/semantics/publishedVersion, ,
Enlaces:	The risk of noise induced hearing loss, when wearing a hearing protector, can only be calculated with the knowledge of the noise level at the protected ear. Several methods are available for calculating this level, from the hearing protectors' attenuation…
Fecha:	2004-03-01
Recurso:	Canadian Acoustics

Recurso libre

Inverse acoustical characterization of open cell porous media using impedance tube measurements
Atalla, Youssef; Grp. Acoust. l'Univ. de Sherbrooke, Dept. Génie Mécanique, Université de Sherbrooke, Sherbrooke, Que. J1K 2R1, Canada - Panneton, Raymond; Grp. Acoust. l'Univ. de Sherbrooke, Dept. Génie Mécanique, Université de Sherbrooke, Sherbrooke, Que. J1K 2R1, Canada

Formato:	info:eu-repo/semantics/article, info:eu-repo/semantics/publishedVersion, ,
Enlaces:	Unlike porous models developed for particular absorbing materials and frequency ranges, the Johnson-Champoux-Allard model is a generalized model for sound propagation in porous materials over a wide range of frequencies. This model is nowadays used widely across the acoustic research…
Fecha:	2005-03-01
Recurso:	Canadian Acoustics

Recurso libre

Three-dimensional single-hydrophone tracking of a sperm whale demonstrated using workshop data from the bahamas
Tiemann, Christopher O.; Applied Research Laboratories, University of Texas at Austin, P.O. Box 8029, Austin, TX 78713

Formato:	info:eu-repo/semantics/article, info:eu-repo/semantics/publishedVersion, Conference Proceedings, Actes de congrès
Enlaces:	A passive acoustic localization method for tracking the movement of a clicking sperm whale in three-dimensions using data from just one hydrophone is demonstrated using data made available for the 3rd International Workshop on Detection and Classification of Marine Mammals.…
Fecha:	2008-03-01
Recurso:	Canadian Acoustics

Recurso libre

Robust 2D localization of low-frequency calls in shallow waters using modal propagation modelling
Gervaise, C.; E3I2, EA3876, GIS Europôle Mer, 2 Rue François Verny, 29200 Brest, France - Vallez, S.; E3I2, EA3876, GIS Europôle Mer, 2 Rue François Verny, 29200 Brest, France - Stephan, Y.; CMO/SHOM, 13 Rue Chatellier, 29200, Brest, France - Simard, Y.; Institut des Sciences de la Mer, Université du Québec à Rimouski, 310 allée des Ursulines, Rimouski, QC G5L 3A1, Canada

Formato:	info:eu-repo/semantics/article, info:eu-repo/semantics/publishedVersion, Conference Proceedings, Actes de congrès
Enlaces:	We propose a new method to localize low-frequency calls in 2D in shallow waters from a sparse array of hydrophones using modal propagation modelling. An analysis of modal propagation modelling of transients signals in shallow water environment shows that the…
Fecha:	2008-03-01
Recurso:	Canadian Acoustics

Recurso libre

Statistical classification of odontocete clicks
Gillespie, Douglas; Sea Mammal Research Unit, Gatty Marine Laboratory, University of St. Andrews, Fife, KY16 8LB, United Kingdom - Caillat, Marjolaine; Sea Mammal Research Unit, Gatty Marine Laboratory, University of St. Andrews, Fife, KY16 8LB, United Kingdom

Formato:	info:eu-repo/semantics/article, info:eu-repo/semantics/publishedVersion, Conference Proceedings, Actes de congrès
Enlaces:	To the best of our knowledge, all odontocetes produce some kind of click like vocalisation, which is used primarily for echolocation but may also play a role in social communication. Characteristics of these echolocation pulses range from the broad band…
Fecha:	2008-03-01
Recurso:	Canadian Acoustics

Recurso libre

Extraction of the vocal tract area function by external stimulus, Extraction de la Fonction d'Aire du Conduit Vocal par Excitation Externe
Teffahi, Hocine; Univ. Sci./Technol. Houari B., Lab. Commun. Parlee/Traitement Sign., Fac. d'Electron. et d'Info., BP 32, El alia, Alger, Algeria - Guerin, Bernard; Inst. de Communication Parlée, INPGrenoble, 46 Avenue Félix Viallet, 38000, Grenoble, France - Djeradi, Amar; Univ. Sci./Technol. Houari B., Lab. Commun. Parlee/Traitement Sign., Fac. d'Electron. et d'Info., BP 32, El alia, Alger, Algeria

Formato:	info:eu-repo/semantics/article, info:eu-repo/semantics/publishedVersion, ,
Enlaces:	Knowledge of vocal tract area function is important for the understanding of phenomena occurring during speech production. We present here a new measurement method based on external excitation of the vocal tract with a known pseudo-random sequence, where the area…
Fecha:	2004-12-01
Recurso:	Canadian Acoustics

Recurso libre

From microstructure to acoustic behaviour of porous materials
Perrot, C.; GAUS, Mechanical Engineering Department, Université de Sherbrooke, Sherbrooke, Que. J1K 2R1, Canada - Panneton, R.; GAUS, Mechanical Engineering Department, Université de Sherbrooke, Sherbrooke, Que. J1K 2R1, Canada - Olny, X.; LASH, DGCB URA CNRS 1652, Ecl. Natl. Travaux Pub. de l'Etal, 69518 Cedex, France

Formato:	info:eu-repo/semantics/article, info:eu-repo/semantics/publishedVersion, Conference Proceedings, Actes de congrès
Enlaces:	A method to determine the macroscopic parameters of absorbent materials from the knowledge of their cellular microstructure, either identified by computer microtomography or scaled by macro-micro geometrical model is discussed. All the relevant quantities have been computed on cellular systems.…
Fecha:	2004-09-01
Recurso:	Canadian Acoustics

Recurso libre

Parallel recognizer algorithm for automatic speech recognition
Agbago, Akakpo; Institute for Information Technology, National Research Council of Canada, Pavillon Lucien Brault, 101 rue St-Jean-Bosco, Gatineau, Que. J8Y 3G4, Canada - Barrière, Caroline; Institute for Information Technology, National Research Council of Canada, Pavillon Lucien Brault, 101 rue St-Jean-Bosco, Gatineau, Que. J8Y 3G4, Canada

Formato:	info:eu-repo/semantics/article, info:eu-repo/semantics/publishedVersion, Conference Proceedings, Actes de congrès
Enlaces:	A parallel recognizer algorithm for automatic speech recognition (ASR) was presented. This algorithm uses the principle of best-fit in an open competition for all phonemes in the Knowledge Base of Reference Phonemes (KBRP). The phonemes were concurrently matched in KBRP…
Fecha:	2004-09-01
Recurso:	Canadian Acoustics

Recurso libre

Acoustical evaluation of six 'green' office buildings
Hodgson, Murray; Acoustics and Noise Research Group, SOEH-MECH, University of British Columbia, 2206 East Mall, Vancouver, BC V6T 1Z3, Canada - Hyde, Rosamund; Stantec Consulting Ltd., 1100 - 111 Dunsmuir Street, Vancouver, BC V6B 6A3, Canada - Fulton, Blair; Stantec Consulting Ltd., 1100 - 111 Dunsmuir Street, Vancouver, BC V6B 6A3, Canada - Taylor-Hell, Catherine; Stantec Consulting Ltd., 1100 - 111 Dunsmuir Street, Vancouver, BC V6B 6A3, Canada

Formato:	info:eu-repo/semantics/article, info:eu-repo/semantics/publishedVersion, Conference Proceedings, Actes de congrès
Enlaces:	A investigation was conducted to evaluate six 'green' office buildings acoustically to learn design lessons. It involved a meeting with designers, performing an occupant satisfaction survey, analyzing the acoustical responses, walking through the building, and planning acoustical measurements. The results…
Fecha:	2008-09-01
Recurso:	Canadian Acoustics

Recurso libre

10.

Detection and classification of North Atlantic right whales in the bay of fundy using independent component analysis
La Cour, Brian R.; Applied Research Laboratories, University of Texas at Austin, P.O. Box 8029, Austin, TX 78713 - Linford, Michael A.; Applied Research Laboratories, University of Texas at Austin, P.O. Box 8029, Austin, TX 78713

Formato:	info:eu-repo/semantics/article, info:eu-repo/semantics/publishedVersion, Conference Proceedings, Actes de congrès
Enlaces:	A novel method of detection and classification for marine mammals is presented which uses techniques from independent component analysis to solve the blind source separation problem for North Atlantic right whales (Eubalaena glacialis). Using the fundamentally non-Gaussian nature of marine…
Fecha:	2004-06-01
Recurso:	Canadian Acoustics

Recurso libre

11.

Acoustic source localization with environmental uncertainty
Dosso, Stan E.; School of Earth and Ocean Sciences, University of Victoria, Victoria, BC V8W 3P6, Canada - Wilmut, Michael J.; School of Earth and Ocean Sciences, University of Victoria, Victoria, BC V8W 3P6, Canada

Formato:	info:eu-repo/semantics/article, info:eu-repo/semantics/publishedVersion, Conference Proceedings, Actes de congrès
Enlaces:	A nonlinear Bayesian formulation is applied to study uncertainty in ocean acoustic source localization due to uncertainty in the knowledge of ocean environmental properties. Localization uncertainty is quantified in terms of probability ambiguity surfaces (PAS), which consists of joint marginal…
Fecha:	2006-09-01
Recurso:	Canadian Acoustics

Recurso libre

12.

On estimating sound power from a few single point measurements
Richarz, Werner; Pinchin Environmental, 5749 Coopers Ave, Mississauga, Ont. L4Z 1R5

Formato:	info:eu-repo/semantics/article, info:eu-repo/semantics/publishedVersion, Conference Proceedings, Actes de congrès
Enlaces:	The features of sound pressure measurements over reflective ground for compact source radiating broad-band noise, are described. The nature of a sound field generated by a broad-band source located above a reflecting surface, is also described. The mean-square sound is…
Fecha:	2006-09-01
Recurso:	Canadian Acoustics

Recurso libre

13.

Acoustic recording systems for baleen whales and killer whales on the west coast of Canada
Vagle, Svein; Institute of Ocean Sciences, 9860 West Saanich Road, Sidney, BC V8L 4B2 - Ford, John K.B.; Pacific Biological Station, 3190 Hammond Bay Rd, Nanaimo, BC V9T 6N7 - Erickson, Neil; Institute of Ocean Sciences, 9860 West Saanich Road, Sidney, BC V8L 4B2 - Hall-Patch, Nick; Institute of Ocean Sciences, 9860 West Saanich Road, Sidney, BC V8L 4B2 - Kamitakahara, Grace; Institute of Ocean Sciences, 9860 West Saanich Road, Sidney, BC V8L 4B2

Formato:	info:eu-repo/semantics/article, info:eu-repo/semantics/publishedVersion, Conference Proceedings, Actes de congrès
Enlaces:	The threat to the survival of several whale species and the introduction of the Species at Risk Act (SARA) has highlighted the need for better knowledge about the biology and ecology of marine mammals in Canadian waters. The North Pacific…
Fecha:	2004-06-01
Recurso:	Canadian Acoustics

Recurso libre

14.

Infrasound from wind turbines - Fact, fiction or deception
Leventhall, Geoff; Noise and Vibration Consultant, 150 Craddocks Avenue, Ashtead Surrey KT21 1NL, United Kingdom

Formato:	info:eu-repo/semantics/article, info:eu-repo/semantics/publishedVersion, ,
Enlaces:	Infrasound is discussed in terms of what it actually is, how the media has dealt with it and what those with limited knowledge say about it. The perception of infrasound occcurs at levels higher than the levels produced by wind…
Fecha:	2006-06-01
Recurso:	Canadian Acoustics

Recurso libre

15.

Pressure/mass method to measure open porosity of porous solids
Salissou, Yacoubou; GAUS, Department of Mechanical Engineering, Universite de Sherbrooke, QC J1K 2R1, Canada - Panneton, Raymond; GAUS, Department of Mechanical Engineering, Universite de Sherbrooke, QC J1K 2R1, Canada

Formato:	info:eu-repo/semantics/article, info:eu-repo/semantics/publishedVersion, Conference Proceedings, Actes de congrès
Enlaces:	A new method is proposed, to measure the open porosity of porous solids. The method needs a simple apparatus and its accuracy is predictable from the knowledge of the total bulk volume of the tested porous sample. Volume needs to…
Fecha:	2008-09-01
Recurso:	Canadian Acoustics

Recurso libre

16.

Sparse broadband acoustic response estimation via a gaussian mixture model with application to m-ary orthogonal signaling
Gendron, Paul J.; Maritime Surveillance Division, Code 56490 Space and Naval Warfare Systems Center Pacific, San Diego, CA, United States

Formato:	info:eu-repo/semantics/article, info:eu-repo/semantics/publishedVersion, ,
Enlaces:	Shallow water acoustic response functions at high frequencies and large bandwidths exhibit spatio- temporal variability that depends greatly on the propagation media's volume and boundary conditions as well as system source-receiver motion. For this reason practical acoustic systems invariably must…
Fecha:	2012-03-01
Recurso:	Canadian Acoustics

Recurso libre

17.

A PC based measurement system for obtaining spatial information and objective room-acoustic indicators
Abdou, A.; Centre for Building Studies, Concordia Univ., Montreal, Que., Canada - Guy, R.W.; Centre for Building Studies, Concordia Univ., Montreal, Que., Canada

Formato:	info:eu-repo/semantics/article, info:eu-repo/semantics/publishedVersion, ,
Enlaces:	Over the last twenty years, many subjectively relevant objective room-acoustics quantities or indicators for evaluating the acoustical quality of an enclosure have been introduced. Whilst indicators give new insight into the acoustical goodness of a receiver position, there is still…
Fecha:	1993-03-01
Recurso:	Canadian Acoustics

Recurso libre

18.

Objets sonores: une représentation bio-inspirée, hiérarchique, parcimonieuse à très grandes dimensions utilisable en reconnaissance, Objets sonores: une représentation bio-inspirée, hiérarchique, parcimonieuse à très grandes dimensions utilisable en reconnaissance
Brodeur, Simon - Rouat, Jean; Groupe de recherche en Neuroscience Computationelle et Traitement Intelligent des Signaux (NECOTIS) Département génie électrique et génie informatique, Université de Sherbrooke, Sherbrooke QC Canada J1K 2R1

Formato:	info:eu-repo/semantics/article, info:eu-repo/semantics/publishedVersion, ,
Enlaces:	The emphasis is put on the hierarchical structure, independence and sparseness aspects of auditory signalrepresentations in high-dimensional spaces, so as to define the components of auditory objects. The conceptof an auditory object and its neural representation is introduced. An illustrative…
Fecha:	2013-06-01
Recurso:	Canadian Acoustics