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Sound Definitions
| Term | Definition |
|---|---|
| Sound | A form of energy that travels by longitudinal mechanical waves |
| Natural Frequency | Frequency at which a body oscillates when vibrating freely |
| Resonance | Rapid amplification of oscillation when a periodic force is applied at the same frequency as the natural frequency of a body |
| Stationary Wave | A wave that remains in a constant position |
| Node | A point on a stationary wave where there is no vibration |
| Antinode | A point on a stationary wave where there is maximum vibration |
| Fundamental Frequency | The lowest natural frequency of a vibrating object |
| Harmonics | Multiples of the fundamental frequency |
| Quality | Describes the shape of a sound wave; it depends on the number and the amplitudes of the harmonics present |
| Sound Intensity | Rate at which sound energy passes through a unit area at right angles to the direction of the propagation of the wave |
| Threshold of Hearing | The smallest sound intensity detectable by the average human ear at a frequency of 1 kHz |
| Sound Intensity Level | Scale that compares a particular sound intensity to the threshold of hearing |
| dB(A) Scale | A sound intensity level scale that has been adapted for the ear's frequency response |
Created by:
conordesmond
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