Term
| Acoustic Propagation Properties |
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Definition
| The effects of the medium upon the sound wave |
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Definition
| The effects of the sound wave upon the biologic tissue through which it passes |
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Definition
| ...carry energy from one location to another |
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Definition
...are mechanical
...move through a medium as a result of physical vibration (compression and rarefaction, like a Slinky)
...cannot travel in a vacuum
..travel in a straight line
...are longitudinal |
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Term
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Definition
| Low dispersion of molecules |
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Definition
| High dispersion of molecules |
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Definition
One compression and one rarefaction
One peak and one trough |
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Definition
Properties of sound waves that may chance as they travel through a medium; used to distinguish sound waves from other waves due to rhythmic oscillation
- Pressure
- Density
- Distance
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Term
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Definition
The concentration of force in an area
Units: pascals (Pa) |
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Definition
The concentration of mass in a volume
Units: kg/cm^3 |
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Definition
A measure of particle motion
Units: cm, mm, nm |
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Definition
Features and characteristics used to describe a sound wave
- Period
- Frequency
- Amplitude
- Power
- Intensity
- Wavelength
- Propagation speed
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Term
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Definition
| Particles move perpendicular to the direction of wave propagation |
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Term
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Definition
| Particles move in the same direction of wave propagation |
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Term
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Definition
| When the peaks and troughs of 2+ waves match perfectly to enhance the effect of each other |
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Term
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Definition
| When the peaks and troughs of 2+ waves occur at different types to mitigate the effects of each other |
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Term
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Definition
When more than one sound beam travels through a medium, multiple beams may arrive at a give point simultaneously, lose their individual characteristics, and combine to form one wave
Constructive vs Destructive
When waves of different frequencies interfere with each other, constructive and destructive interference can result |
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Term
| Constructive Interference |
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Definition
| In-phase waves combine to form one wave with a resulting increase in amplitude |
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Term
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Definition
| Out-of-phase waves unite and form a single wave with a smaller amplitude |
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