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Representation of Spectral Profiles in the Auditory System Part II: A Ripple Analysis Model

dc.contributor.authorVranic-Sowers, S.en_US
dc.contributor.authorShamma, S.A.en_US
dc.description.abstractBased 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 independent dimensions. They correspond to the magnitude and phase of a localized Fourier transformation of the profile, closely analogues to the spatial frequency transformations described in the visual system. Within this general framework, 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 tuned to a particular ripple frequency and ripple phase. The parameters of the model are estimated using data from ripple detection experiments in [Green, 1986; Hillier, 1991]. Perceptual thresholds are then computed from the filter outputs and compared with thresholds measured for peak profile experiments, and for detection tasks with step, single component increment, and the alternating profiles.en_US
dc.format.extent1442364 bytes
dc.relation.ispartofseriesISR; TR 1993-77en_US
dc.subjectsignal processingen_US
dc.subjectspeech processingen_US
dc.subjectmodels en_US
dc.subjecttheories of auditoryen_US
dc.subjectCommunication en_US
dc.subjectSignal Processing Systemsen_US
dc.titleRepresentation of Spectral Profiles in the Auditory System Part II: A Ripple Analysis Modelen_US
dc.typeTechnical Reporten_US

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