Sound Pressure Level: Difference between revisions
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The term most often used in measuring the magnitude of sound. It is a relative quantity in that it is the ratio between the actual SOUND PRESSURE and a fixed reference pressure. This reference pressure is usually that of the THRESHOLD OF HEARING which has been internationally agreed upon as having the value .0002 dynes/cm2. | The term most often used in measuring the magnitude of sound. It is a relative quantity in that it is the ratio between the actual SOUND PRESSURE and a fixed reference pressure. This reference pressure is usually that of the THRESHOLD OF HEARING which has been internationally agreed upon as having the value .0002 dynes/cm2. | ||
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— Source: [http://www.diracdelta.co.uk/science/source/s/o/sound%20pressure%20level/source.html http://www.diracdelta.co.uk] | — Source: [http://www.diracdelta.co.uk/science/source/s/o/sound%20pressure%20level/source.html http://www.diracdelta.co.uk] | ||
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