PC-based wireless instrument for monitoring noise pollution

Date

6-2002

Degree

Bachelor of Science in Applied Physics

College

College of Arts and Sciences (CAS)

Adviser/Committee Chair

Nelio C. Altoveros

Abstract

A PC-based wireless instrument for monitoring noise pollution was successfully developed. A low-powered portable FM Transmitter with a FET microphone and its Preamplifier was used to transmit the audio signal of the noise being measured to an FM Receiver that was interfaced in a computer set-up. The whole instrument was calibrated to relate the highest amplitude of the audio signal, which is measured in voltage, to the Sound Pressure Level (SPL) of the noise measured in decibel unit. The SPL of the noise, which was compared to the standard value, is 87.69-99.41% accurate. Noise pollution at the highway in Los Banos (in front of Maxims Building near Olivarez) was monitored in three days (May 21-23,2002) at every 10-minute interval starting from approximately 7:00 AM to 7:00 PM. Results show that the early start of the days has the lowest measured noise levels and was followed by a time with the highest measured noise levels due to the sudden increase of the number of vehicles and people. The particular place was proven to have noise pollution since the average noise level of the day exceeded the Threshold Limit Values of Noise. The PC-based wireless instrument for monitoring noise pollution is the best alternative for the usual Sound Level meters since the data gathering will require less manpower and safety. Data processing of the computer can be automated and performed separately from the site of noise monitoring.

Language

English

Location

UPLB Main Library Special Collections Section (USCS)

Call Number

Thesis

Document Type

Thesis

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