Loud
Loud
Loud (/laʊd/; from Old English hlūd) is a term used in audiology and acoustics to describe the intensity or amplitude of a sound or noise. It is often associated with the subjective perception of sound volume, which can vary depending on the individual and the context.
Etymology
The term "loud" originates from the Old English word "hlūd", which has the same meaning. It has been used in the English language since at least the 12th century.
Definition
In the field of acoustics, loudness is a subjective measure of the intensity of a sound as perceived by the human ear. It is not a direct measure of the physical properties of the sound, but rather how these properties are interpreted by the auditory system. The unit of measurement for loudness is the decibel (dB).
Related Terms
- Decibel: A unit of measurement used to express the ratio of one value of a power or field quantity to another, on a logarithic scale.
- Sound Pressure Level (SPL): A logarithmic measure of the effective pressure of a sound relative to a reference value.
- Frequency: The number of occurrences of a repeating event per unit of time. In the context of sound, it refers to the pitch of the sound.
- Amplitude: In the context of sound, amplitude refers to the magnitude of change in the oscillating variable with each oscillation within an oscillating system.
- Pitch: The perceived fundamental frequency of a sound. It is more commonly recognized as the 'highness' or 'lowness' of a sound.
See Also
External links
- Medical encyclopedia article on Loud
- Wikipedia's article - Loud
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