Purpose:

• To provide the student knowledge of different types of noise, of methods and

instrumentation for the analysis and measurement of noise and of noise prevention and

abatement.

• To give the student knowledge of rules, standards, and legislation concerning noise.

Contents:

• Classification and description of noise (frequency, time, space). Noise sources

(machinery, traffic, and neighbours). Standards (ISO, IEC, CEN), laws, regulations,

legislation, relevant authorities. Noise effects on humans: Loudness, noisiness,

annoyance, physiological and psychological disorders and damages.

• Sound pressure level measurement: frequency weighting (A, B, C, D, G). Leq,T, SEL,

percentile level etc. Ratings and noise descriptors. Road traffic noise, aircraft noise.

Environmental influences: distance, reflecting surfaces, background noise, and

atmospheric effects.

• Sound power determination: diffuse field and free-field methods, precision

engineering and survey methods. Intensity measurement.

• Limitations of the conventional methods, binaural methods.

• Noise Abatement: Absorbers, barriers, enclosures, mufflers and lined ducts, vibration

isolation. Insertion loss, transmission loss and noise reduction. Planning and level

estimation. Hearing protecting devices. Active noise control.

Prerequisites:

Fundamentals of Acoustics, Acoustical Measurement Technique, Human Sound

Perception and Psychometry (Module 2 required, module 1 recommended).

Duration:

1 module

Category:

Study programme course (SE-course)