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| the sound that we can't hear!! |
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the apparent change in the frequency of a sound caused by the motion of either the listener or the source of the sound. |
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the sound in a source will be softer because the amplitude is decreased. |
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measure the loudness of sounds |
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the unit to express frequency.(1 Hz= 1 wave per second) |
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the number of waves produced in a given amount of time. |
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| Difference between music and noise! |
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Music would have a pattern and noise would be all BLAHH!! |
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| the loudness of a sound!! |
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the bouncing back of a wave after it strikes a barrier. |
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Constructive Interference |
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the sound in a source will be louder because the amplitude is increased. |
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How the ear works (OUTER EAR) |
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acts as a funnel for sound waves. The pinna collects sound waves and directs them into the ear canal. |
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How the ear works (MIDDLE EAR) |
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three bones -- the hammer, anvi, and stirrup -- && they act as levers to increase the size of the vibrations. |
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How the ear works (INNER EAR) |
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is where vibrations created by sound are changed into electrical signals for the brain to interpret. |
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is a substance in which a wave can travel through. |
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a region of lower pressure or density in a wave. |
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