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<p>Creating course page via bot</p> <p><b>New page</b></p><div>{{Infobox Course<br /> | code = MCL715<br /> | name = Design for Noise, Vibration and Harshness<br /> | credits = 3<br /> | credit_structure = 2-0-2<br /> | pre_requisites = MCL733<br /> | overlaps = <br /> }}<br /> <br /> == MCL715 : Design for Noise, Vibration and Harshness ==<br /> Basic principles of environmental noise: Definition, basic attributes of sound (wavelength, period, frequency velocity, speed, pressure, power and sound intensity), units (decibel, dB(A) and SPL), Wave analysis of structures and spaces. Environmental noise propagation: Sources, distance from source, atmospheric absorption, wind, temperature, wind and temperature gradient, obstacles such as barriers and buildings, ground absorption, reflections, humidity. Perception and of effects of noise: Human ear &amp; hearing damage, measures of hearing, loudness, phones, noise descriptors. WHO guidelines for community noise: speech masking, activity interference, noise and sleep, noise annoyance. Noise measurements and instrumentation: Noise measurement and control instrumentation, Leq and various noise metrics for road, railway, aircraft and industrial noises. Various types of acoustic testing chambers. Source identification, Sound Intensity Mapping. Noise Control: Importance of reverberations time. Design of absorption systems for required reverberation time. Noise isolation design. Noise absorber design. Vibration Control Strategies: Design of Isolators in machine foundations.</div>

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