Author:
Publisher:
ISBN:
Category :
Languages : en
Pages : 64
Book Description
Propagation of acoustic waves in the atmosphere is affected by several mechanisms. Two of the effects are the scattering of sound by small-scale atmospheric turbulence and fluctuation of the speed of sound gradients by the passage of large-scale atmospheric turbulence. Small- and large-scale atmospheric turbulence causes the acoustic waves to be altered by different mechanisms. Until recently, the majority of work in turbulence effect on acoustics has concentrated on the small-scale turbulence regime of the inertial subrange of the Kolmogorov spectrum. Earlier small-scale turbulence models have concentrated on the statistical-based work of Tatarski. Current turbulence models deal more with the structural nature of the turbulence because the statistical approach does not account for all of the turbulence effects being measured during acoustic propagation experiments. The large-scale turbulence problem cannot be handled very well with a statistical approach to atmospheric turbulence because the regime of the large-scale turbulence extends into the energy containing subrange or sometimes referred to as the source region. This report discusses the current and past turbulence models used to treat the effect of small- and large-scale turbulence on atmospheric acoustic propagation. (AN).
The Effects of Large and Small Scale Turbulence on Sound Propagation in the Atmosphere
Author:
Publisher:
ISBN:
Category :
Languages : en
Pages : 64
Book Description
Propagation of acoustic waves in the atmosphere is affected by several mechanisms. Two of the effects are the scattering of sound by small-scale atmospheric turbulence and fluctuation of the speed of sound gradients by the passage of large-scale atmospheric turbulence. Small- and large-scale atmospheric turbulence causes the acoustic waves to be altered by different mechanisms. Until recently, the majority of work in turbulence effect on acoustics has concentrated on the small-scale turbulence regime of the inertial subrange of the Kolmogorov spectrum. Earlier small-scale turbulence models have concentrated on the statistical-based work of Tatarski. Current turbulence models deal more with the structural nature of the turbulence because the statistical approach does not account for all of the turbulence effects being measured during acoustic propagation experiments. The large-scale turbulence problem cannot be handled very well with a statistical approach to atmospheric turbulence because the regime of the large-scale turbulence extends into the energy containing subrange or sometimes referred to as the source region. This report discusses the current and past turbulence models used to treat the effect of small- and large-scale turbulence on atmospheric acoustic propagation. (AN).
Publisher:
ISBN:
Category :
Languages : en
Pages : 64
Book Description
Propagation of acoustic waves in the atmosphere is affected by several mechanisms. Two of the effects are the scattering of sound by small-scale atmospheric turbulence and fluctuation of the speed of sound gradients by the passage of large-scale atmospheric turbulence. Small- and large-scale atmospheric turbulence causes the acoustic waves to be altered by different mechanisms. Until recently, the majority of work in turbulence effect on acoustics has concentrated on the small-scale turbulence regime of the inertial subrange of the Kolmogorov spectrum. Earlier small-scale turbulence models have concentrated on the statistical-based work of Tatarski. Current turbulence models deal more with the structural nature of the turbulence because the statistical approach does not account for all of the turbulence effects being measured during acoustic propagation experiments. The large-scale turbulence problem cannot be handled very well with a statistical approach to atmospheric turbulence because the regime of the large-scale turbulence extends into the energy containing subrange or sometimes referred to as the source region. This report discusses the current and past turbulence models used to treat the effect of small- and large-scale turbulence on atmospheric acoustic propagation. (AN).
Scientific and Technical Aerospace Reports
Author:
Publisher:
ISBN:
Category : Aeronautics
Languages : en
Pages : 542
Book Description
Publisher:
ISBN:
Category : Aeronautics
Languages : en
Pages : 542
Book Description
Springer Handbook of Acoustics
Author: Thomas Rossing
Publisher: Springer Science & Business Media
ISBN: 0387304460
Category : Science
Languages : en
Pages : 1179
Book Description
This is an unparalleled modern handbook reflecting the richly interdisciplinary nature of acoustics edited by an acknowledged master in the field. The handbook reviews the most important areas of the subject, with emphasis on current research. The authors of the various chapters are all experts in their fields. Each chapter is richly illustrated with figures and tables. The latest research and applications are incorporated throughout, including computer recognition and synthesis of speech, physiological acoustics, diagnostic imaging and therapeutic applications and acoustical oceanography. An accompanying CD-ROM contains audio and video files.
Publisher: Springer Science & Business Media
ISBN: 0387304460
Category : Science
Languages : en
Pages : 1179
Book Description
This is an unparalleled modern handbook reflecting the richly interdisciplinary nature of acoustics edited by an acknowledged master in the field. The handbook reviews the most important areas of the subject, with emphasis on current research. The authors of the various chapters are all experts in their fields. Each chapter is richly illustrated with figures and tables. The latest research and applications are incorporated throughout, including computer recognition and synthesis of speech, physiological acoustics, diagnostic imaging and therapeutic applications and acoustical oceanography. An accompanying CD-ROM contains audio and video files.
Predicting Outdoor Sound
Author: Keith Attenborough
Publisher: CRC Press
ISBN: 0429894821
Category : Technology & Engineering
Languages : en
Pages : 579
Book Description
The second edition of Predicting Outdoor Sound is an up-to-date reference on the propagation of sound close to the ground and its prediction. New content includes comparisons between predictions and data for road traffic, railway and wind turbine noise; descriptions of source characteristics in the HARMONOISE model; propagation over rough seas, parallel low walls, and lattices; outlines of numerical methods; gabion (caged stones) and sonic crystal noise barriers; meteorological effects on noise barrier performance; and the prediction requirements for auralization. The book brings together relevant theories, prediction schemes, and data, thereby providing a basis for determining what model or scheme might be applicable for any situation. It also offers a background on useful analytical approximations and the restrictions, as well as difficulties and limitations associated with engineering prediction schemes. The text should be of considerable interest to researchers in outdoor sound propagation and, more generally, it should provide a comprehensive primer on the topic for lecturers, consultants and students in acoustics and noise control.
Publisher: CRC Press
ISBN: 0429894821
Category : Technology & Engineering
Languages : en
Pages : 579
Book Description
The second edition of Predicting Outdoor Sound is an up-to-date reference on the propagation of sound close to the ground and its prediction. New content includes comparisons between predictions and data for road traffic, railway and wind turbine noise; descriptions of source characteristics in the HARMONOISE model; propagation over rough seas, parallel low walls, and lattices; outlines of numerical methods; gabion (caged stones) and sonic crystal noise barriers; meteorological effects on noise barrier performance; and the prediction requirements for auralization. The book brings together relevant theories, prediction schemes, and data, thereby providing a basis for determining what model or scheme might be applicable for any situation. It also offers a background on useful analytical approximations and the restrictions, as well as difficulties and limitations associated with engineering prediction schemes. The text should be of considerable interest to researchers in outdoor sound propagation and, more generally, it should provide a comprehensive primer on the topic for lecturers, consultants and students in acoustics and noise control.
Remote Sensing of Pollutants Computerized Reduction of Long-path Absorption Data
Author: Vernon Ellsworth Derr
Publisher:
ISBN:
Category : Absorption spectra
Languages : en
Pages : 834
Book Description
Publisher:
ISBN:
Category : Absorption spectra
Languages : en
Pages : 834
Book Description
Government Reports Announcements & Index
Author:
Publisher:
ISBN:
Category : Science
Languages : en
Pages : 1774
Book Description
Publisher:
ISBN:
Category : Science
Languages : en
Pages : 1774
Book Description
Noise: Its Effect on Man and Machine
Author: United States. Congress. House. Committee on Science and Astronautics
Publisher:
ISBN:
Category : Airplanes
Languages : en
Pages : 276
Book Description
Committee Serial No. 13. Reviews research on control of aircraft noise.
Publisher:
ISBN:
Category : Airplanes
Languages : en
Pages : 276
Book Description
Committee Serial No. 13. Reviews research on control of aircraft noise.
Hearings
Author: United States. Congress. House. Committee on Interstate and Foreign Commerce
Publisher:
ISBN:
Category :
Languages : en
Pages : 1648
Book Description
Publisher:
ISBN:
Category :
Languages : en
Pages : 1648
Book Description
Noise Control
Author: United States. Congress. House. Committee on Interstate and Foreign Commerce. Subcommittee on Public Health and Environment
Publisher:
ISBN:
Category : Noise control
Languages : en
Pages : 520
Book Description
Publisher:
ISBN:
Category : Noise control
Languages : en
Pages : 520
Book Description
Noise Control, Hearings Before the Subcommittee on Public Health and Enviornment ... 92-1, on H.R. 5275, 923, 3364, 6002, 6986, and 6988; June 16, 17, 22, 23, and 24, 1971
Author: United States. Congress. House. Interstate and Foreign Commerce
Publisher:
ISBN:
Category :
Languages : en
Pages : 544
Book Description
Publisher:
ISBN:
Category :
Languages : en
Pages : 544
Book Description