Spectro-Temporal Modulation Transfer Functions and Speech Intelligibility

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dc.contributor.authorChi, Taishihen_US
dc.contributor.authorGao, Yujieen_US
dc.contributor.authorGuyton, Matthew C.en_US
dc.contributor.authorRu, Powenen_US
dc.contributor.authorShamma, Shihaben_US
dc.contributor.departmentISRen_US
dc.contributor.departmentCAARen_US
dc.date.accessioned2007-05-23T10:09:08Z
dc.date.available2007-05-23T10:09:08Z
dc.date.issued1999en_US
dc.description.abstractDetection thresholds for spectral and temporal modulations are measuredusing broadband spectra with sinusoidally rippled profiles that drift up or down the log-frequency axis at constant velocities. Spectro-temporal Modulation Transfer Functions (MTF) are derived as a function of ripple peak density (cycles/octave) and drifting velocity (Hz). MTFs exhibit a lowpass function with respect to both dimensions, with 50 percent bandwidths ofabout 16 Hz and 2 cycles/octave. The data replicate (as special cases) previously measured purely temporal MTFs [Viemeister, 1979] and purely spectral MTFs [Green, 1986].<p>We present a computational auditory model that exhibits spectro-temporal MTFs consistent with the salient trends in the data.The model is used to demonstrate the potential relevance of these MTFsto the assessment of speech intelligibility in noise and reverberantconditions.en_US
dc.format.extent2993514 bytes
dc.format.mimetypeapplication/pdf
dc.identifier.urihttp://hdl.handle.net/1903/6121
dc.language.isoen_USen_US
dc.relation.ispartofseriesISR; TR 1999-61en_US
dc.relation.ispartofseriesCAAR; TR 1999-2en_US
dc.subjectspeech processingen_US
dc.subjectauditory modelen_US
dc.subjectspeech intelligibilityen_US
dc.subjectIntelligent Signal Processing and Communications Systemsen_US
dc.titleSpectro-Temporal Modulation Transfer Functions and Speech Intelligibilityen_US
dc.typeTechnical Reporten_US

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