Absolute thresholds and frequency selectivity in normal and impaired hearing
Absolute thresholds and frequency selectivity in normal and impaired hearing
Frequency selectivity refers to the ability to resolve the sinusoidal components in complex sounds. This chapter describes frequency selectivity associated with normal and impaired hearing. Methods of measuring frequency selectivity are described. These include changes in frequency selectivity with centre frequency and level; the concept of the excitation pattern; frequency selectivity in impaired hearing; suppression effects as revealed in nonsimultaneous masking and their reduction in impaired hearing; influence of reduced frequency selectivity on the internal representation of speech sounds; and perceptual consequences of reduced frequency selectivity.
Keywords: frequency resolution, excitation pattern, suppression, complex sounds
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