Accession Number : ADA290218

Title :   Estimating Attenuation and Propagation of Noise Bands From a Distant Source Using the Lookup Program and Data Base.

Descriptive Note : Final rept.,

Corporate Author : CONSTRUCTION ENGINEERING RESEARCH LAB (ARMY) CHAMPAIGN IL

Personal Author(s) : White, Michael J.

PDF Url : ADA290218

Report Date : OCT 1994

Pagination or Media Count : 42

Abstract : Unavoidable noise generated by military activities can disturb the surrounding community and become a source of complaint. Military planners must quickly and accurately predict noise levels at distant points from various sound sources to manage noisy operations on a daily basis. This study developed the Lookup computer program and data base to provide rapid estimates of outdoor noise levels from a variety of sound sources. Lookup accesses a data base of archived results (requiring about 5 MB disk space) from typical situations rather than performing fresh calculations for each consultation. Initial timing tests show that Lookup can predict the sound levels from a noise source at distances up to 20 km in 1 second on a DOS-compatible personal computer (PC). This report includes the Lookup program source code, and describes the required input for the program, the contents of the archival data base, and the program output. Look up was written to compile with MS-Fortran, and will run under DOS on any IBM compatible with 640k random access memory. Lookup also conforms to ANSI 1978 standard Fortran and will run under the Unix operating system.

Descriptors :   *MILITARY FACILITIES, *PUBLIC RELATIONS, *NOISE POLLUTION, TEST AND EVALUATION, COMPUTER PROGRAMS, DATA BASES, MILITARY OPERATIONS, COMPUTATIONS, FORECASTING, ESTIMATES, LONG RANGE(DISTANCE), LEVEL(QUANTITY), ACOUSTIC ATTENUATION, RADIATED NOISE, OUTDOOR.

Subject Categories : Noise Pollution and Control

Distribution Statement : APPROVED FOR PUBLIC RELEASE