PS_Loudness_Pitch - Near Miss to Weber's Law I = KI Weber's...

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1 Near Miss to Weber’s Law I KI Δ = Weber’s Law ( ) 0 I K I I Δ = + Fechner’s generalization of Weber’s Law ( ) 0.9 0 I K I I Δ = + “Near miss” to Weber’s Law Intensity discrimination in the auditory system is described approximately by Weber’s law. The generalized Weber’s law holds for noise bursts. The near miss to Weber’s law holds for pure tones.
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2 Responses of 8 th nerve fibers as a function of sound intensity. The different kinds of eighth nerve neurons may help explain how Weber’s law can hold over such a large range.
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3 Equal loudness contours and audibility curve for humans. These show which sound levels have the same loudness, but they do not provide a measure of the absolute loudness.
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4 0.3 L kI = Subjective Loudness Measured With Magnitude Estimation Techniques Stevens’ Power Law: Subjective loudness increases approximately as the cube root of sound level. Subjective loudness also varies with the distribution of frequencies in the sound waveform.
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5 Equal loudness contours and audibility curve for humans.
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