quiz

Pages: 44 (6114 words) / Published: Aug 24th, 2014
AQ1.1 What is sound?

Arch1361 Environment 2. Exam Preparation Quizzes 1. Vibrations that travel through the air and can be heard when they reach a persons ear. 2.A form of energy transmitted through the air (or other material).

AQ1.2 What terms (or “characteristics”) do we use to describe sound?

Arch1361 Environment 2. Exam Preparation QuizzesFrequency and Level (amplitude)

AQ1.3 What is the difference between Sound Power and Sound Pressure?

Arch1361 Environment 2. Exam Preparation Quizzes Sound power is the CAUSE, Sound Pressure is the EFFECT.

Arch1361 Environment 2. Exam Preparation Quizzes
AQ1.4 What terms are used for Sound Power Level and Sound Pressure Level?

Arch1361 Environment 2. Exam Preparation Quizzes Sound Power Level = SWL, Sound Pressure Level = SPL.

Arch1361 Environment 2. Exam Preparation Quizzes
AQ1.5 How much does the sound from a “point source” reduce every time the receiving distance is doubled?

Jesiah Davis 4 x decrease in sound pressure. (6dB reduction)

AQ1.6 Ditto for a “line source”?

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Jesiah Davis 3dB reduction (if it is a true line source) or half sound pressure per doubling of distance.
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2.
Arch1361 Environment 2. Exam Preparation Quizzes
5 hours ago
AQ1.7 What is the (approximate) frequency range that we hear?

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Jesiah Davis 20Hz-20000Hz (Matthew Harrison) 20Hz-16000Hz (Szokolay).
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Mickael Akkerman I think he will consider the lecture values = 20Hz to 20KHz
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3.
Arch1361 Environment 2. Exam Preparation Quizzes
5 hours ago
AQ1.8 What is the (approximate) range of noise levels we can hear (from the threshold hearing to the threshold feeling)?

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Jesiah Davis approx. one 20 millionth of a Pascal to around 60 Pascals.
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