Abstract
Using the chirp fast field program (CFFP), a systematic method has been developed for numerical computation of sound propagation in an inhomogeneous atmosphere above a ground with an abrupt change in impedance. In situations where a noise is generated above one type of ground surface (say pavement) and travels beyond its edge, onto a second type of surface (e.g., grassy ground), each surface usually controls the rate of attenuation near it. When the air near the ground is refractive, it may emphasize the attenuation during downward refraction and eliminate it in upward refraction. Other effects of the inhomogeneous atmosphere are discussed. Several interesting examples will be presented.
Sign-in/Register to access full text options 
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a callDisclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.
