SUBJECT
Acoustic and noise contamination
lecture
master
2
Semester 2
Spring semester
Scope of the course: After review of the basics of acustic theories (waves, their generation, and the laws of propagation) the biological and physiological aspects (human ear, hearing, perceptions) are covered. The topics: characteristics of sonic waves ( types of waves, intensity), spectrum-analysis (Fourier-analysis, noise, tones) are touched. Acustic instruments and noise control procedures are taken into consideration, then insight into sountechnical and diagnostics application is provided.
Theme of the course: Definitions and basic concepts, wave equations and the solutions (chains, strings, vibrating air columns, beams, plates, membranes vibrations); soundsources, acoustic resonator; similarity of sound spaces, types of waves. Dispersion relations, soundspeed, shock waves. Energy relations in acoustics, sound pressure, sound, sound intensity, loudness in dB scale. Sound spreading, refraction, absorption. Boundary layer phenomena, sound insulation, sound insulations. Audio frequency analysis, Fourier analysis, sound spectrum. Clear sound, music, bang, noise. Infrasound, human voice, ultrasound. Acoustic instruments: microphones, sonar, human ear, piezoelectric transceivers. Noise harm, noise protections, noise standards, active noise reductions.
- Kinsler, L., Frey, A., Coppens, A., & Sanders, J. (Eds.). (2000).Fundamentals of acoustics (4th ed.). New York: John Wiley and Sons.
- Hemond, C. (1983). In Ingerman S. ( Ed.), Engineering acoustics and noise control. New Jersey: Prentice-Hall
- Allan D. Pierce, 1989. Acoustics: An Introduction to its Physical Principles and Applications (Acoustical Society of America). ISBN 0-88318-612-8