Sound waves
Sound waves
Agenda today 1.The Speed of Sound Waves 2.Interference of sound waves 3.Doppler effect
Agenda today 1. The Speed of Sound Waves 2. Interference of sound waves 3. Doppler effect
Sound waves: Frequency of sound waves(pitch):20--25000 Hz The intensity of sound waves: Decibel scale B=101og70 =10-12W/m2 Business office Heavy truck Jet take-off 50 6) Loudness (dB)
Sound waves: Frequency of sound waves(pitch): 20--25000 Hz The intensity of sound waves: Decibel scale I0=10-12 W/m2
Hammer Anvil Stirrup Semicircular canals (for balance) Oval window 八 Vestibular nerve Cochlear nerve Cochlea / Eardrum (tympanum) Eustachian tube ”% Ear canal W Harmonic Decay=1/k(k odd)
white noise High pass Pink noise Low pass Band pass
white noise High pass Low pass Band pass Pink noise