Training

Environmental Noise Measurement & Analysis Seminar

Mon-Tues, Mar 17-18, 2025
Mon-Tues, Oct 20-21, 2025

Seminar overview

Mon-Tues, Mar 17-18, 2025 Mon-Tues, Oct 20-21, 2025

Registration Fee: $ 2,350

Background Discussion & ABSTRACT

The 2 day Environmental Noise Seminar training is intended for engineers, technicians and hygienists working in the fields of environmental, community, and/or Industrial noise measurement, analysis and control. The training will be presented at the Navcon office in Fullerton CA.

Note: The training room is on the 2nd floor and attendees need to use stairs to get to the 2nd floor.

We will review the fundamentals of acoustics, sound source characterization, and outdoor sound propagation based upon national and international standards and guidelines.

Upon completion of the training, attendees will be able to measure, predict and assess environmental noise impact. Classroom lectures will be supported by hands-on laboratories which focus on test instrumentation & planning, digital signal processing, sound pressure & noise modeling.

The training fee includes lunch and refreshment (i.e., coffee, tea, soda, water). Vegetarian lunch option is available on request.

Fundamentals of Acoustics

Basic physics: definition of motion and the wave equation
Sound pressure, sound intensity and sound power
The decibel scale (adding/subtracting/ averaging sound levels)
Noise descriptors Lp, LI, Lw, Ln, Leq, Lm
Time weighting & frequency filtering
Near, far, free and reverberant sound fields
Time and frequency domain (1/1,& 1/3 octave and FFT) analysis
Measurement considerations
Wave propagation, sound spreading, reaction, screening, sound refraction

OUTDOOR NOISE PROPAGATION

Principal formulas and methodologies
Transmission path attenuation (divergence, air absorption, screening and scattering reflections, ground effects, wind effects, meteorological stability)
Review of National & International guidelines/standards (ISO, VDI, GENERAL PREDICTION METHOD, CONCAWE, FHWA, …)
Development of propagation models for rail, traffic, industry and leisure noise)
“Rules of Thumb” for outdoor noise analysis

SOURCE CHARACTERIZATION

Point, line and area sources
Noise source emission (intensity and sound power)
Frequency spectrum (full and third octave band)
Interior sound pressure level, exterior sound power level
Sound radiation/directivity patterns
Steady state, transient and tonal sound sources
Measurement in accordance with ISO, ANSI and manufacturer standards

Demonstrations, Hands on Laboratory and Outdoor Exercises

Sound power determination using sound pressure & sound intensity methods
Community noise measurement and characterization based upon statistical descriptors
Development of a 3-D, computer generated acoustical model
Noise level predictions and noise wall/berm design using the “verified” analytical model
Presentation of measured noise data, sound level diagrams and noise contours