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Question: Explain Weber’s Law. What is meant by the “near miss” to Weber’s law when referring to intensity just noticeable differences (JNDs) of pure tones?
Weber's law states that the just noticeable difference (JND) of a sensory stimulus is proportional to its intensity. That is, the JND between two stimuli of different intensities is proportional to the magnitude of the intensity. This is used to determine the threshold of perception for changes in intensity for a given stimulus. The “near miss” to Weber's law refers to cases where the JND between two pure tones is lower than expected, based on Weber's law. This near miss can be due to several factors, from the number of frequency components in the two tones, to the presence of noise, to the individual's own auditory physiology.
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