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      Spectral modulation detection and vowel and consonant identifications in cochlear implant listeners.

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          Abstract

          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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          Author and article information

          Journal
          J. Acoust. Soc. Am.
          The Journal of the Acoustical Society of America
          Acoustical Society of America (ASA)
          1520-8524
          0001-4966
          Sep 2009
          : 126
          : 3
          Affiliations
          [1 ] Auditory Research and Development, Advanced Bionics Corporation, 12740 San Fernando Road, Sylmar, CA 91342, USA.
          Article
          10.1121/1.3179670
          19739707
          461752a2-1c19-4618-bf06-1e860894ec46
          History

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