A Law for Loudness Discrimination

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Science  24 Aug 1962:
Vol. 137, Issue 3530, pp. 618-619
DOI: 10.1126/science.137.3530.618


A law for loudness is proposed which implies detection and averaging in a general nonlinear device with excitation by a complex signal-noise wave form. This law provides a mechanistic explanation for subjective intensity in the general time varying case. Mathematical solutions to the general law may be obtained in certain elementary cases, the well-known power-law characteristic being an example. A modified Weber law is derived which is in good agreement with experiments at both small and moderate stimulus intensities.