Chapter 3 Noise Analysis

Landrum & Brown Team Chapter Three – Noise Analysis October 2013 Page 3-1 CHAPTER THREE NOISE ANALYSIS This chapter presents background information on the properties of sound and government research and policy on noise. This chapter also presents the analysis conducted for this Part 150 Noise Compatibility Study Update for the Seattle-Tacoma International Airport (Sea-Tac Airport), including information and the methodology and results of the noise contour modeling. This chapter is divided into the following sections:  Characteristics of Sound – Presents properties of sound that are important for technically describing noise in an airport setting.  Factors Influencing Human Response to Sound – Presents acoustic factors in human subjective response to a sound that affects its perception.  Health Effects of Noise – Summarizes the potential human disturbances and health effects of noise.  Standard Noise Descriptors – Presents various sound rating scales and how they may be applied to addressing aircraft operations.  Federal Laws, Policies, and Research Related to Noise – Presents a summary of current noise assessment policies used to assess aircraft noise impacts and the research supporting those policies.  Baseline Noise Exposure – Presents the methodology and results of the measurement and modeling of noise impacts around Sea-Tac Airport. 3.1 CHARACTERISTICS OF SOUND Sound is created by a source that induces vibrations in the air. The vibration produces alternating bands of relatively dense and sparse particles of air, spreading outward from the source like ripples on a pond. Sound waves dissipate with increasing distance…

Open full document

Upcoming Events

PSCAA Advisory Council Meeting Agenda
Add to CalendarMWednesday Mar 11, 9:00am - 11:35am
1904 3rd Avenue, Suite 105, Seattle, WA 98101
Call to order – Roll Call – Quorum Established – Land Acknowledgement We would like to acknowledge that our Agency operates in four present-day counties, which are the traditional lands of the Coast Salish people, past and present. This acknowledgement does not take the place of authentic relationships with indigenous communities in our jurisdiction and [...]