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SaL 2.1-2.3
The Nature of Sound, Properties of Sound, and Music
Term | Definition |
---|---|
vibrate | to move back and forth. |
waves | A disturbance that transfers energy from place to place. |
medium | The material through which a wave travels. |
density | The ratio of the mass of a substance to its volume (mass divided by volume). |
pitch | A description of how a sound is perceived as high or low. |
loudness | Perception of the energy of a sound. |
intensity | The amount of energy per second carried through a unit area by a wave. |
decibel (dB) | A unit used to compare the loudness of different sounds. |
Doppler effect | The change in frequency of a wave as its source moves in relation to an observer. |
music | A set of sounds or notes combined in ways that are pleasing. |
fundamental tone | The lowest natural frequency of an object. |
overtone | A natural frequency that is a multiple of the fundamental tone’s frequency. |