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25 Cards in this Set
- Front
- Back
- 3rd side (hint)
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Sound |
A disturbance of matter that is transmitted from its source outward |
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Hearing |
The perception of sound |
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Pitch |
The perception of the frequency of a sound |
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Intensity |
The power per unit area carried by a wave |
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Sound intensity level |
A unitless quantity telling you the level of the sound relative to a fixed standard |
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Sound pressure level |
The ratio of the pressure amplitude to a reference pressure |
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Doppler effect |
An alteration in The observed frequency of a sound due to motion of either the source or the Observer |
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Doppler shift |
The actual change in frequency due to relative motion of source and observer |
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Sonic boom |
A constructive interference of sound created by an object moving faster than sound |
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Bow wake |
V-shaped disturbance created when the wave Source moves faster than the wave propagation speed |
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Antinode |
Point of Maximum displacement |
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Node |
Point of zero displacement |
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Fundamental |
The lowest frequency resonance |
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Overtones |
All resonant frequencies higher than the fundamental |
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Harmonics |
The term used to refer collectively to the fundamental and its overtones |
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Loudness |
The perception of sound intensely |
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Timbre |
Number and relative intensity of multiple sound frequencies |
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Note |
Basic unit of music with specific names combined to generate Tunes |
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Tone |
Number and relative intensity of multiple sound frequencies |
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Phon |
The numerical unit of loudness |
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Ultrasound |
Sounds above 20000 Hertz |
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Infrasound |
Sounds below 20 Hertz |
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Acoustic impedance |
Property of medium that makes the propagation of sound waves more difficult |
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Intensity reflection coefficient |
A measure of the ratio of the intensity of the wave reflected off of boundary between two media relative to the intensity of the incident wave |
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Doppler shifted ultrasound |
A medical technique to detect motion and determine velocity through the Doppler shift of an echo |
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