Sound Propagation
Absorption by the medium itself due to internal friction within the medium
What is internal absorption?
The hearing organ
What is the Cochlea?
Sound bending around barriers or through openings of barriers
A compressed wave that produces a sensation in the human ear
What is psychoacoustics sound?
X axis for a waveform is
What is Time?
As a listener and sound source move closer together, the listener perceives a higher pitch
What is the Doppler Effect?
Two major aspects of hearing loss
What is degree of loss and age at onset?
Refers to the repetitions and extensions of reflected sounds
What is Reverberation?
A systematic pressure disturbance through an elastic medium
What is Acoustic Sound?
Basilar membrane vibrates like a _________ wave
What is a transverse wave?
In general, soft porous materials have more absorption but there is an exception to the rule
What is Glass?
Loss resulting from malfunctions or abnormalities of the outer and middle ear
What is Conductive Loss?
Rooms with very short reverberation times?
What is "Dead" Rooms?
A stadium wave
What is a Transverse Wave?
Noise with energy concentrated in a relatively narrow range of frequency
What is Narrowband Noise?
Furthest you want to be to get the BEST sound energy
What is Critical Distance?
Combination of sensorineural and conductive loss
What is Mixed hearing loss?
Waves change direction as they go from one medium to another
The movement or a distortion of a material or medium, where the individual parts or elements of the material only move back-and-forth, up-and-down, or in a cyclical pattern
What is Wave Motion?
Basilar membrane is automatically stimulated at different parts based on varying pitches, like a piano.
What is Tonotopic Organization?
Peak resonance of an adult ear canal
What is 3000 to 4000 Hz?
Conditions that occur as a result of genetics
What is Endogenous Disorders?
If a wall is flat and smooth, sound would _____ back in the _____ direction it came in
What is reflect and same?
Series of compressions (points or areas __________ _________) and rarefactions (points or areas of ___________ ___________)
What is increased pressures and decreased pressures?
Vibrates freely depending on mass, stiffness, and friction of a system
What is Resonance Frequency?