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chapter15 deffintons
chapter 15
Question | Answer |
---|---|
frequency | sound tells you how fast pressure oscillates |
superpostion principle | sound creates by superpstion of many frequncies |
decibels | loudness of a sound |
speaker | device spicificly to reproduce sounds accuratly |
acoustics | sound and technology of sound |
microphone | transforms sound waves into electrical signal |
stereo | recorded sound you hear |
longitudinal waves | air thats compressed in direction of travel |
wavelength | sound in air thats compairable to size of everyday objects |
subsonic | moving slower than sound |
shock wave | forms when wave fronts pile up |
supersonic | moveing faster than sound |
reverbration | multible scho |
fourier's theorm | any wave can be repersented as a sum of single frquency waves |
frequency spectrum | graph that shows amplitude of each component frequency in complex wave. |
sonogram | special graph that shows how lound sound is in diffrent frequencies. |
cochlea | tiny fluid filled organ |
rhythm | reqular time pattern in a sound |
musical scale | pattern of frequencies |