The Journal of the Acoustical Society of America · 2009 · 103 citations · 9 references
Health ProfessionsAudiologyOtolaryngologyCochlear ImplantsHearing SciencePsychoacousticsAcoustic PhoneticsAuditory DiscriminationAuditory PhoneticsAuditory ThresholdsCochlear NeuroscienceSpeech PerceptionAuditory AcousticsFrequency ModulationSpectral Auditory DiscriminationSpectral Auditory ProcessingSpectral Cues In SpeechSpectral EnvelopeSpectral Feature DetectionSpectral Features
Speech understanding by cochlear implant listeners may be limited by their ability to perceive complex spectral envelopes. Here, spectral envelope perception was characterized by spectral modulation transfer functions in which modulation detection thresholds became poorer with increasing spectral modulation frequency (SMF). Thresholds at low SMFs, less likely to be influenced by spectral resolution, were correlated with vowel and consonant identifications [Litvak, L. M. et al. (2008). J. Acoust. Soc. Am. 122, 982-991] for the same listeners; while thresholds at higher SMFs, more likely to be affected by spectral resolution, were not. Results indicate that the perception of broadly spaced spectral features is important for speech perception.
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