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CammarataA_Properties of Sound_Period 3_041713.

Properties of sound. Definitions of Pitch, Loudness, Decibel & the doppler effect

Alissa Cammarata

on 18 April 2013

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Transcript of CammarataA_Properties of Sound_Period 3_041713.

& the Doppler Effect Properties of Sound Pitch Loudness Decibel The extent to which a sound can be heard. The most common unit used to measure loudness. Doppler Effect An observed change in the frequency of a wave when the source or observer is moving. A measure of how high or low a sound is perceived to be, depending on the frequency of the sound wave. Science Textbook
http://docstore.mik.ua/orelly/web2/audio/ch02_01.htm Science Textbook
http://docstore.mik.ua/orelly/web2/audio/ch02_01.htm The observed frequency is higher when the source and observer are getting closer.The observed frequency is lower when the source and observer are getting farther away. Example: A car is driving towards you, as the car gets closer the frequency gets quicker and the car gets louder. When the car passes you and travels away, the frequency slows down and the car gets more quiet. Science Textbook &
http://www.phys.unsw.edu.au/jw/dBNoFlash.html Science Textbook &
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