NDLTD Global ETD Search
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  • About
  • The Global ETD Search service is a free service for researchers to find electronic theses and dissertations. This service is provided by the Networked Digital Library of Theses and Dissertations.
    Our metadata is collected from universities around the world. If you manage a university/consortium/country archive and want to be added, details can be found on the NDLTD website.

Search results

Showing 101 to 110 of 387 (0.037 seconds)
101

Error sensor placement for active control of an axial cooling fan /

Shafer, Benjamin Michael, January 2007 (has links) (PDF)
Thesis (M.S.)--Brigham Young University. Dept. of Physics and Astronomy, 2007. / Includes bibliographical references (p. 109-114).
102

Error sensor strategies for active noise control and active acoustic equalization in a free field /

Chester, Ryan T., January 2008 (has links) (PDF)
Thesis (M.S.)--Brigham Young University. Dept. of Physics and Astronomy, 2008. / Includes bibliographical references (p. 149-157).
103

Traffic noise mitigation in Hong Kong

Law, Kam-wah, January 2005 (has links)
Thesis (M. A.)--University of Hong Kong, 2005. / Title proper from title frame. Also available in printed format.
104

Comparison of noise reduction results for fit-testing and continuous observations during coal mining for selected earplug and earmuff

Wu, Mingyu, January 2010 (has links)
Thesis (Ph. D.)--West Virginia University, 2010. / Title from document title page. Document formatted into pages; contains xii, 97 p. : ill. (some col.). Includes abstract. Includes bibliographical references (p. 94-97).
Ear Noise control. Coal mines and mining
105

Material parameter identification of acoustic polymeric foams via theoretical modeling and experimental measurements

Frangakis, Stephanie. January 2006 (has links)
Thesis (M.S.M.E)--University of Delaware, 2006. / Principal faculty advisor: Jian-Qiao Sun, Dept. of Mechanical Engineering. Includes bibliographical references.
106

Investigation into road rumble in a light utility vehicle /

Wade, Andrew David. January 2005 (has links)
Thesis (MScIng)--University of Stellenbosch, 2005. / Bibliography. Also available via the Internet.
107

An efficient algorithm for ECG denoising and beat detection /

Tiwari, Tarun Mani. January 2008 (has links)
Thesis (M.S.)--University of Texas at Dallas, 2008. / Includes vita. Includes bibliographical references (leaves 34-37)
108

An investigation of the structurally induced acoustic field in a car passenger compartment

Whear, Frank R. January 1994 (has links)
The causes and characteristics of structurally induced interior noise in cars in relation to the boom problem is discussed and the relevant theory developed. The work is concerned with structural excitation of the air within the passenger compartment associated with the second order component of the engine crankshaft out of balance forces. This limits the frequency range of interest to below 200 Hz. Firstly, the acoustic modes of a Rover Metro passenger compartment are predicted using the finite element method. A new method for the experimental acoustic modal analysis of cavities is introduced and verified for a rectangular rigid walled room. The method is then applied to the untrimmed passenger compartment of a Rover Metro to determine its acoustic modes and to study the interaction of the structural modes of the vehicle body and acoustic response of the cavity. The acoustics of a Rover Metro passenger compartment are modelled using the finite element method with experimental structural FRF data from the car body as a forcing function. This model is used to predict the noise spectra associated with the second order component of engine excitation experienced by occupants for the bare body. The acoustic effects of various items of trim are added to the model as acoustic absorption coefficients to show the Significance of trim in reducing low frequency boom in car passenger compcompartments. The necessary absorption coefficients were measured with an impedance tube.
534
Motor vehicles; Interior noise control
109

Production, characteristics and abatement of noise from pneumatic machines.

Savich, M. (Miron) January 1972 (has links)
No description available.
Rock-drills -- Noise.
Noise control
Engineering, General.
110

Effects of conventional passive earmuffs, uniformly attenuating passive earmuffs, and hearing aids on speech intelligibility in noise /

Verbsky, Babette L. January 2002 (has links)
No description available.
Health Sciences
Speech
Acoustic measurement
Noise control

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