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Representation of Spectral Profiles in the Auditory System, II: Detection of Spectral Peak Shape Changes
Based on the ripple analysis model outlined in Part I of this paper, predictions are made for the detection of shape changes in spectral peak profiles. Peak shape is uniquely described in terms of two parameters: bandwidth ...
Representation of Spectral Profiles in the Auditory System Part II: A Ripple Analysis Model
Based on experimental results presented in [Vranic-Sowers and Shamma, 1993], and on further physiological and psychoacoustical evidence, it is argued that the auditory system analyzes a spectral profile along two largely ...
Zero-Crossing and Noise Suppression in Auditory Wavelet Transformations
A common sequence of operations in the early stages of most biological sensory systems is a wavelet transform followed by a compressive nonlinearity. In this paper, we explore the contribution of these operations to the ...
Spectral Gradient Columns in Primary Auditory Cortex: Physiological and Psychoacoustical Correlates
Mapping of the spatial distribution of responses in the primary auditory cortex (AI) reveal that both the gradient of the acoustic spectrum and sensitivity to FM sweep direction are encoded in an orderly manner along the ...
Representation of Spectral Profiles in the Auditory System, I: A Ripple Analysis Model
A model of profile analysis is proposed in which a spectral profile is assumed to be represented by a weighted sum of sinusoidally modulated spectra (ripples). The analysis is performed by a bank of bandpass filters, each ...