Community Noise Surveys

Determine the Existing Acoustical Condition

Many community noise problems are very subjective. An individual’s ability to hear, meteorological conditions, time of year, measurement location, and operating conditions of the facility are all variables which effect the actual or perceived problem. The project will typically start with Acoustical Systems meeting with all of the parties concerned with the project. This could be representatives of the city or state enforcement group, and local neighbors that have complaints.

Determine the Acoustical Design Goal

Applicable noise ordinances at the local and/or state level will typically define the acoustical design requirements of a project. These regulations provide a baseline for sound level limits as well best practice data collection guidelines for the certified noise investigator. Community noise surveys identify the source(s) causing elevated noise that may exceed the local noise ordinance limits.

Identify Noise Sources

The individual noise sources prompting the complaints must be identified in order to determine the component each adds to the overall noise level at each location under study. This is determined through several methods including study of the 1/1 and 1/3 octave bands and Fast Fourier Transform (FFT) sound pressure level measurements to determine the frequency profile of each potential noise source. Sound decay vs. distance relationships, sound wave propagation and directional characteristics, and atmospheric condition effects are among the engineering considerations applied to fully understand the scope of the noise problem and to develop an effective noise abatement solution.

Recommend Noise Abatement

Once individual sources have been identified, Acoustical Systems will develop practical engineering controls to abate the noise. Conceptual designs will be reviewed with management and maintenance personnel to develop a solution that will reduce the noise, minimize impact on maintenance, and minimize the cost. When the conceptual designs have been developed, a final report documenting existing noise levels and sources, recommendations, concept designs, material costs, and predicted noise levels after implementation will be submitted.

Post Implementation Verification

Once noise abatement is implemented, Acoustical Systems can measure the post construction noise levels to verify the prediction in the final report.

Contact Acoustical Systems Inc. to inquire about our community noise surveys today.