Measuring Day-Night Noise Levels (DNL) Using the Metrosonics db-310 Sound Level Analyzer (Dosimeter)
Abstract
The Metrosonics db-310 Dosimeter does not provide automatic calculation of DNLs for environmental noise surveys. Previous environmental noise surveys using the db-310 Dosimeter required DNL values to be calculated manually from the paper printout of sound levels. Manual calculations proved to be both laborious and monotonous; worse, one missed key stroke would require a restart of this whole calculation. In addition, the quality of the printouts are very poor if reproduction is required. The manual method of DNL calculating made long term environmental noise monitoring tedious and labor intensive with many opportunities for error. This report presents a program listing, setup requirements, procedures and operating instructions for DNL calculations using the Metrosonics db-310 Noise Dosimeter, a Z-248 or Z-184 Microcomputer, ENABLE software, and a BASIC program. Procedures and operating instructions describe (1) programming the Metrosonics db-310 Dosimeter parameters for environmental noise measurements, (2) down loading its data to a Zenith Z-248 or Z-184 Computer using ENABLE, and (3) running a BASIC program which calculates the DNL and provides a hard copy of the results. (rrh)
Document Details
- Document Type
- Technical Report
- Publication Date
- Sep 01, 1989
- Accession Number
- ADA215757
Entities
People
- Ali Y. Ali