Temporal fine structure mediated recognition of speech in the presence of multitalker babble

Nambi, Pitchai Muthu Arivudai and Mahajan, Yatin and Francis, Nikita and Bhat, Jayashree S. (2016) Temporal fine structure mediated recognition of speech in the presence of multitalker babble. Journal of the Acoustical Society of America, 140 (4). pp. 296-301.

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Abstract

This experiment investigated the mechanisms of temporal fine structure (TFS) mediated speech recognition in multi-talker babble. The signal-to-noise ratio 50 (SNR-50) for naive-listeners was measured when the TFS was retained in its original form (ORIG-TFS), the TFS was time reversed (REV-TFS), and the TFS was replaced by noise (NO-TFS). The original envelope was unchanged. In the REV-TFS condition, periodicity cues for stream segregation were preserved, but envelope recovery was compromised. Both the mechanisms were compromised in the NO-TFS condition. The SNR-50 was lowest for ORIG-TFS followed by REV-TFS, which was lower than NO-TFS. Results suggest both stream segregation and envelope recovery aided TFS mediated speech recognition.

Item Type: Article
Uncontrolled Keywords: TFS, Stream segregation, Envelope recovery
Subjects: Allied Health > Mangalore Campus > Speech and Hearing
Depositing User: KMCMLR User
Date Deposited: 13 Oct 2016 12:24
Last Modified: 13 Oct 2016 12:24
URI: http://eprints.manipal.edu/id/eprint/147125

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