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PHYS 144 exam 2

QuestionAnswer
what are the three parts of the outer ear ? pinna, Auditory canal , and Tympanic membrane(ear drum)
What are the three parts of the middle ear ? malleus , incus, and stapes(stirrup)
What are the three parts of the inner ear ? cochlea,semi-circular canals(involved with balance), and auditory nerve
What function does the outer ear perform? sound gathering
What function does the middle ear perform? mechanical amplitude
What function does the inner ear perform ? signal detection and pre-processing
What does an ear do? transducer: converts pressure change into nerve impulses
What does a microphone do ? transducer that changes pressure variations into voltage variation.
Frequency constant: low frequency lower pitch and higher Sound Intensity Level
Frequency Constant: high frequency higher pitch and higher Sound Intensity Level
What is tempo? number of beats per minute
What is meter? basic grouping of notes in a measure : 4/4 2/4 6/8
What is rhythm? pattern of strong and weak beats
How many semi-tones are in western music octaves ? 12 semi-tones (chromatic scale)
How many notes are in a pentatonic scale? 5 notes
Perfect 4th and perfect 5th intervals are examples of ... Pythagorean temperament
What is the Fourier theorem ? any periodic wave form can be constructed from sine waves who's frequency form a harmonic series.
What is Ohm's Law timbre(tone color) insensitive to relative phase of sine waves making up complex wave form
What is vibrato ? frequency modulation (FM)
What is tremelo ? Amplitude modulation (AM)
What is the missing fundamental effect ? if a series of higher harmonies is established then the brain fills in the missing fundamental .
Created by: thanzali