Author: National Aeronautics and Space Administration (NASA)
Publisher: Createspace Independent Publishing Platform
ISBN: 9781722750305
Category :
Languages : en
Pages : 56
Book Description
Theoretical, computational, and experimental techniques were developed for predicting the effects of irregular topography on long range sound propagation in the atmosphere. Irregular topography is understood to imply a ground surface that: (1) is not idealizable as being perfectly flat, or (2) that is not idealizable as having a constant specific acoustic impedance. The focus is on circumstances where the propagation is similar to what might be expected for noise from low altitude air vehicles flying over suburban or rural terrain, such that rays from the source arrive at angles close to grazing incidence. Berthelot, Yves H. and Pierce, Allan D. and Kearns, James A. and Zhou, Ji-Xun Unspecified Center...
Sound Propagation Over Uneven Ground and Irregular Topography
Author: National Aeronautics and Space Administration (NASA)
Publisher: Createspace Independent Publishing Platform
ISBN: 9781722750305
Category :
Languages : en
Pages : 56
Book Description
Theoretical, computational, and experimental techniques were developed for predicting the effects of irregular topography on long range sound propagation in the atmosphere. Irregular topography is understood to imply a ground surface that: (1) is not idealizable as being perfectly flat, or (2) that is not idealizable as having a constant specific acoustic impedance. The focus is on circumstances where the propagation is similar to what might be expected for noise from low altitude air vehicles flying over suburban or rural terrain, such that rays from the source arrive at angles close to grazing incidence. Berthelot, Yves H. and Pierce, Allan D. and Kearns, James A. and Zhou, Ji-Xun Unspecified Center...
Publisher: Createspace Independent Publishing Platform
ISBN: 9781722750305
Category :
Languages : en
Pages : 56
Book Description
Theoretical, computational, and experimental techniques were developed for predicting the effects of irregular topography on long range sound propagation in the atmosphere. Irregular topography is understood to imply a ground surface that: (1) is not idealizable as being perfectly flat, or (2) that is not idealizable as having a constant specific acoustic impedance. The focus is on circumstances where the propagation is similar to what might be expected for noise from low altitude air vehicles flying over suburban or rural terrain, such that rays from the source arrive at angles close to grazing incidence. Berthelot, Yves H. and Pierce, Allan D. and Kearns, James A. and Zhou, Ji-Xun Unspecified Center...
Sound Propagation Over Uneven Ground and Irregular Topography
Author: Yves Henri Berthelot
Publisher:
ISBN:
Category : Acoustic surface waves
Languages : en
Pages :
Book Description
Publisher:
ISBN:
Category : Acoustic surface waves
Languages : en
Pages :
Book Description
Sound Propagation Over Uneven Ground and Irregular Topography
Scientific and Technical Aerospace Reports
Monthly Catalog of United States Government Publications
Author:
Publisher:
ISBN:
Category : Government publications
Languages : en
Pages : 780
Book Description
Publisher:
ISBN:
Category : Government publications
Languages : en
Pages : 780
Book Description
Monthly Catalogue, United States Public Documents
Author:
Publisher:
ISBN:
Category : Government publications
Languages : en
Pages : 1638
Book Description
Publisher:
ISBN:
Category : Government publications
Languages : en
Pages : 1638
Book Description
Government Reports Annual Index: Corporate author
Author:
Publisher:
ISBN:
Category : Government reports announcements & index
Languages : en
Pages : 1028
Book Description
Publisher:
ISBN:
Category : Government reports announcements & index
Languages : en
Pages : 1028
Book Description
On the Long Range Propagation of Sound Over Irregular Terrain
Author: M. S. Howe
Publisher:
ISBN:
Category : Acoustical engineering
Languages : en
Pages : 44
Book Description
Publisher:
ISBN:
Category : Acoustical engineering
Languages : en
Pages : 44
Book Description
Government Reports Annual Index
Author:
Publisher:
ISBN:
Category : Research
Languages : en
Pages : 1030
Book Description
Sections 1-2. Keyword Index.--Section 3. Personal author index.--Section 4. Corporate author index.-- Section 5. Contract/grant number index, NTIS order/report number index 1-E.--Section 6. NTIS order/report number index F-Z.
Publisher:
ISBN:
Category : Research
Languages : en
Pages : 1030
Book Description
Sections 1-2. Keyword Index.--Section 3. Personal author index.--Section 4. Corporate author index.-- Section 5. Contract/grant number index, NTIS order/report number index 1-E.--Section 6. NTIS order/report number index F-Z.