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Interaction of Sound and Media

Created by AC 2017
Across
The redirection of sound in all directions
Sound that is uniformly distributed in all directions; related to frequency; an example is a red blood cell
Anything other than 90 degrees
When a boundary is rough, reflected sound is disorganized and random. Also called Diffuse.
Occurs when propagating sound energy strikes a boundary between two media and some returns to the transducer
The amount of attenuation per centimeter
90 degrees, right angles and perpendicular are considered ________ incidence
Describes the physics of refraction
Greater than 90 degrees
Less than 90 degrees
Transmission with a bend
Rayleigh scattering is related to _______
Down
Reflections from a smooth reflector; return in one direction
Units for attenuation
Portion of the incident intensity that, after striking a boundary, changes direction and returns back from where it came
The decrease in intensity, power and amplitude of a sound wave as it travels. Unrelated to speed
IRC; The ______ of the US intensity that bounces back when the sound strikes a boundary
Attenuation in air is ________ than soft tissue
Intensity of the sound wave at the instant in time prior to striking a boundary
Portion of the incident intensity that, after striking a boundary, continues on in the same general direction that it was originally traveling
A number associated with a medium; calculated, not measured
In soft tissue, _______ frequency results in less attenuation
Attenuation in bone is ________ than soft tissue