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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.
291

High-level audio morphing strategies

Hatch, Wesley January 2005 (has links)
This thesis presents high-level strategies for controlling existing audio morphing algorithms. Prominent methods for spectrally representing audio data in the context of audio morphing are surveyed, and techniques involving manipulating and interpolating additive models are explored. Additionally, a combination of past audio-morphing approaches (sinusoidal morphing techniques as well as techniques taken from an MFCC approach) are employed in order to facilitate any type of sonic input. The system presented herein is meant to accommodate a wide range of inputs, and will adjust the impact of a high-level feature depending on the type and quality of the input.* / *This dissertation is a compound document (contains both a paper copy and a CD as part of the dissertation).
292

Culture mediation and sound preservation : methodologies in ethnomusicology

Wendt, Christopher Lee January 2004 (has links)
This thesis explores how the study of culture can benefit from Western technology by reviewing anthropological theoretical and methodological processes and issues concerning reciprocity between the ethnographers and research subjects. In this case I am exploring the process of digitizing and dissemination of 400 hours of Kiowa song recordings. New digitizing equipment has made audio preservation and access relatively easy and affordable. These issues are most critical to groups like the Kiowa whose songs I have already started digitizing. In this thesis I closely examine existing collaborative theory and methodology in order to demonstrate the balance that can and should be maintained when using technology to preserve traditional music. In general, applying audio technology to an anthropological problem can enhance or inhibit the ethnographic process. My thesis focuses on how audio technology can contribute to this process without inhibiting, complicating, or distorting the way ethnomusicologists, folklorists, and anthropologists practice go about recording sound. / Department of Anthropology
293

Wind Turbine Sound Propagation in the Atmospheric Boundary Layer

Öhlund, Olof January 2014 (has links)
Wind turbines have grown both in size and number in the past decades. The taller turbines has made it possible to place them in forest areas which is fortunate for a country like Sweden with lots of forest. An issue with wind turbines is the sound they produce. The sound mainly comes from the rotor blades when they pass through the air. The sound heard some distance away from the turbine is sometimes masked by ambient background noise such as wind induced sound in the vegetation, but this is not always the case. Noise concerns among some people living in the vicinity of wind turbines are sometimes raised. Sound propagation models are used to predict the wind turbine sound level at certain distance. It is important that these models are accurate. Sound propagation is greatly influenced by the meteorological conditions. These conditions change over the day and year and vary a lot depending on the terrain conditions. In the past, large meteorological propagation effects have been found for sound sources close to the ground. Higher elevated sources like wind turbines have not been studied as much. One reason for this is that wind turbines are a relatively new sound source. In this thesis the meteorological influence on the wind turbine sound propagation is studied. Continuous simultaneous acoustic and meteorological measurements are performed at two different wind turbine sites during two years to capture all variations in the weather. The two sites are covered by forest, one is flat and the other has shifting terrain. The sites are representative for many locations in Sweden and around the world. The differences between the measured and expected wind turbine sound levels are established for different meteorological categories. The median of all deviations within each meteorological category is then compared. During no snow cover conditions the variation of the median under different meteorological conditions is 6 dBA and during snow cover the variation of the median is 14 dBA. The variations are due to the combined effect of refraction, ground conditions and terrain shape. The deviations from an expected value are seen for all octave bands from 63 Hz to 1000 Hz but are found to most distinct at low frequencies of around 125Hz. Meteorological effects starts to be important somewhere between 400 m and 1000 m from wind turbines.The characteristic "swish" sound from wind turbines are also studied in this thesis. The swish sound or as it is also called, the amplitude modulated sound, is found to be more common under some meteorological conditions such as temperature inversions and downwind conditions. A metric for detection of amplitude modulation duration and strength is proposed. Amplitude modulation, is according to some, the reason why wind turbine sound is perceived as more annoying than other typical environmental sounds at the same sound level. The swishes probably increase the probability to hear the wind turbine sound in presence of other background noise.
294

Sound art and the annihilation of sound /

Davies, Shaun. January 1995 (has links)
Thesis (M.A. (Hons.))--University of Western Sydney, Nepean, 1995. / Includes bibliographical footnotes. Bibliography: leaves [1-6].
295

The integrated sound, space and movement environment the uses of analogue and digital technologies to correlate topographical and gestural movement with sound /

Mustard, Jonathan. January 2006 (has links)
Thesis (M.A.)--Edith Cowan University, 2006. / Submitted to the Faculty of Education and Arts. Western Australian Academy of Performing Arts. Includes bibliographical references.
296

Re-sounding images : sound and image in an audiovisual age /

Chua, Collin. January 2007 (has links)
Thesis (Ph.D)--Murdoch University, 2007. / Thesis submitted to the Faculty of Creative Technologies and Media. Includes bibliographical references (leaves 334-354).
297

Audio segmentation, classification and visualization a thesis submitted to Auckland University of Technology in fulfilment of the requirements for the degree of Doctor of Philosophy (PhD), 2009 /

Zhang, Jessie Xin. January 2009 (has links)
Thesis (PhD)--AUT University, 2009. / Includes bibliographical references. Also held in print (xv, 230 leaves : ill. ; 30 cm.) in the Archive at the City Campus (T 621.3893028566 ZHA)
298

Analysis and comparison of three acoustic energy density probes /

Locey, Lance Lester, January 2004 (has links) (PDF)
Thesis (M.S.)--Brigham Young University. Dept. of Physics and Astronomy, 2004. / Includes bibliographical references (p. 103).
299

Music retailing in Hong Kong /

Goh, Man-fat, Joseph. January 1994 (has links)
Thesis (M.B.A.)--University of Hong Kong, 1993. / Includes bibliographical references (leaves 62-65).
300

Lossless audio data compression /

Zhao, Kan. January 1900 (has links)
Thesis (M.Sc.)--Acadia University, 2007. / Includes bibliographical references (leaves 72-75). Also available on the Internet via the World Wide Web.

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