Airport Noise Study Questions (KEY) (SLO 1 Input) (SLO 2 Execute) (SLO 3 Evaluate) (SLO 4 Explain) (SLO 5 Conclude) (SLO 6 Recommend) 1.List three causes of atmospheric pressure change and the ear’s reaction to each.(SLO 4 Explain) 2.Sound volume or loudnessis due to rapid microscopic atmospheric pressure variations in Amplitudewhile sound pitchis due to rapid microscopic atmospheric pressure variations in frequency.(SLO 4 Explain) 4.Fill in the following table with a representative dB values.(SLO 4 Explain) 1
5.Sketch the relationship between a sound level meter and the human auditory system. Identify the major problem this relationship produces when measuring airport noise and dealing with airport noise complaints.(SLO 4 Explain) 2
6.In Lp terms, a clearly noticeable volume change is associated with a 5 dBchange.(SLO 4 Explain)7.In DNL terms, a clearly noticeable sound exposure level (SEL) change is associated with a 1.5dBAchange if the new DNL is above 65 dB. 9.Sketch a graph of A-level SPL dB weighting corrections (y-axis) vs. frequency (x-axis). Include representative dB values on the y-axis and frequency values on the x-axis. Insure your x-axis depicts a logarithmic scale. Explain how a sound pressure level measuring device would employ this scale to its dBA output reading. Explain the purpose of this weighting scale relative to humans.(SLO 4 Explain) Symbology e21f896ff3edca167494d9c0712f9be2e477572e 16:30:35 3
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- Fall '12
- Sound pressure, Noise pollution, dnl, airport noise