Type of Document Master's Thesis Author Mitchell, Bruce Wayne URN etd-03132013-040018 Title Determination of acoustic ray paths in enclosed spaces Degree Master of Science Department Mechanical Engineering Advisory Committee
Advisor Name Title Hurst, Charles J. Committee Chair Mitchell, Larry D. Committee Member Robertshaw, Harry H. Committee Member Keywords
- ray tracing plots
Date of Defense 1975-02-05 Availability unrestricted Abstract
The results of the theoretical and experimental investigations allow some conclusions to be drawn:
1. The program can handle irregular rooms including room boundaries with slanted surfaces.
2. The ray tracing plots can indicate areas where absorption material may be added to reduce sound levels at a given receiver location.
3. The sound pressure level predictive capabilities of the program are promising and justify further work using the methods determined in this work.
Recommendations for the improvement of the program include investigating different intensity calculations not based on a point sound source. Directivity of the source and diffraction effects in irregular rooms need to be incorporated into the program. The program should also be extended to handle barriers within a room. Investigations into the effects of air absorption should also be considered.
Filename Size Approximate Download Time (Hours:Minutes:Seconds)
28.8 Modem 56K Modem ISDN (64 Kb) ISDN (128 Kb) Higher-speed Access LD5655.V855_1975.M585.pdf 4.65 Mb 00:21:32 00:11:04 00:09:41 00:04:50 00:00:24next to an author's name indicates that all files or directories associated with their ETD are accessible from the Virginia Tech campus network only.
If you have questions or technical problems, please Contact DLA.