hearing - Sound Properties of sound waves Frequency length...

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Sound Properties of sound waves Frequency- length of the sound wave o Perception of pitch o Low- sound waves farther apart o High- waves close together Amplitude o Height or intensity of sound wave o Perception of loudness o High amplitude= loud o Low amplitude = sof Complexity o Sound quality or resonance o Perception of timbre o Know a friends voice because it has a particular timbre Waves Hearing is about sound waves and changes in air pressure that unfolds over time Sound waves- changes in air pressure unfolding over time Oscilloscope- electronic lab instrument that traces visible wave form Amplitude- intensity of energy of wave Frequency- rate of vibration, number of sound waves per second, determines pitch Decibels- measurement unit for sound Hertz- measurement unit of frequency Point of curling? Inertia of fluid movement hitting the curl Saves space Low pitch also has to activate the high pitch, low pitch has enough energy to spiral all the way to the end
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Unformatted text preview: of The cochlear Over tme The hair cells near oval window sTarT To geT worn ouT OToacoustc emissions Hair cells also make sound Hair cells generaTe sounds ThaT go ouT of ear, can be picked up by a moniTor = opToacoustc emissions o Can Tell if infanTs are likely To have normal hearing ´inniTus- consTanT ringing sound, caused by spasms in The muscles of The ear, sometmes ringing sometmes clicking, accompanied wiTh hearing loss sometmes, ouTer hair cells ge³ng disrupTed Localizing sound sources Ears on eiTher side of The head gives us sTereophonic hearing Timing method o With ear is s±mulated frst o Best with low Frequency Broader waves, takes longer to hear o When the sound arrives Volume method o Which ear the sounds sounds louder in o Head mu²es sound going through, localize sound o Best with high Frequency sounds We are really good at localizing sound...
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  • Spring '11
  • Marino
  • hair cells, oval window

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