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AS 3657.1-1989
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  • AS 3657.1-1989

AS 3657.1-1989

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Acoustics - Expression of the subjective magnitude of sound or noise - Pure tones, equal-loudness contours

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Full Description

Specifies the relations existing, for the condition of equal-loudness level, between the sound pressure levels and frequencies of pure (sinusoidal) continuous tones in the different conditions. The relations are expressed by means of an equation in bilinear form, for the preferred frequencies in the one-third octave series from 20 Hz to 12 500 Hz inclusive. It is based on ISO 226:1987. See more

R00001468
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