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J Acoust Soc Am. 2009 Jan;125(1):442-6. doi: 10.1121/1.3037233.

The contribution of temporal fine structure to the intelligibility of speech in steady and modulated noise.

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Department of Experimental Psychology, University of Cambridge, Cambridge, England.


Speech reception thresholds were measured with steady and amplitude-modulated noise maskers for signals processed to contain variable amounts of temporal fine structure (TFS) information. Subjects benefited more from TFS information for the modulated than for the steady masker. For both maskers, addition of TFS information up to 548 Hz improved performance, though the improvement was greater for the modulated masker. The addition of TFS information at higher frequencies improved performance further for the modulated masker only. These results are consistent with the idea that TFS information is important for listening in the dips of a fluctuating masker.

[Indexed for MEDLINE]

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