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Representation of Spectral Profiles in the Auditory System, I: A Ripple Analysis Model

dc.contributor.authorVranic-Sowers, S.en_US
dc.contributor.authorShamma, S.A.en_US
dc.description.abstractA 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]. Detection thresholds are computed from the filter outputs and compared with perceptual thresholds, for profile detection experiments with step, single component increment, and the alternating profiles. The model accounts well for the measured thresholds in these experiments. Physiological and psychophysical evidences from the auditory and visual systems in support of this type of a model are also reviewed. The implications of this model for pitch and timbre perception are briefly discussed.en_US
dc.format.extent1202020 bytes
dc.relation.ispartofseriesISR; TR 1994-14en_US
dc.subjectsignal processingen_US
dc.subjectspeech processingen_US
dc.subjectCommunication en_US
dc.subjectSignal Processing Systemsen_US
dc.titleRepresentation of Spectral Profiles in the Auditory System, I: A Ripple Analysis Modelen_US
dc.typeTechnical Reporten_US

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