title: Role and relative contribution of temporal envelope and fine structure cues in sentence recognition by normal-hearing listeners.
abstract: The present study investigated the role and relative contribution of envelope and temporal fine structure (TFS) to sentence recognition in noise. Target and masker stimuli were added at five different signal-to-noise ratios (SNRs) and filtered into 30 contiguous frequency bands. The envelope and TFS were extracted from each band by Hilbert decomposition. The final stimuli consisted of the envelope of the target/masker sound mixture at x dB SNR and the TFS of the same sound mixture at y dB SNR. A first experiment showed a very limited contribution of TFS cues, indicating that sentence recognition in noise relies almost exclusively on temporal envelope cues. A second experiment showed that replacing the carrier of a sound mixture with noise (vocoder processing) cannot be considered equivalent to disrupting the TFS of the target signal by adding a background noise. Accordingly, a re-evaluation of the vocoder approach as a model to further understand the role of TFS cues in noisy situations may be necessary. Overall, these data are consistent with the view that speech information is primarily extracted from the envelope while TFS cues are primarily used to detect glimpses of the target.
authors: Speech Psychoacoustics Laboratory, Department of Speech and Hearing Science, The Ohio State University, Columbus, Ohio 43210, USA. fred.apoux@gmail.com
authors: Frédéric
authors: F
authors: Apoux
authors: Sarah E
authors: SE
authors: Yoho
authors: Carla L
authors: CL
authors: Youngdahl
authors: Eric W
authors: EW
authors: Healy
mesh_terms: D000161:Acoustic Stimulation; D000328:Adult; D001302:Audiometry, Speech; D001309:Auditory Threshold; D003463:Cues; D005260:Female; D006801:Humans; D008297:Male; D009622:Noise / Q000009:adverse effects; D010470:Perceptual Masking; D010507:Periodicity; D010700:Phonetics; D021641:Recognition, Psychology; D059629:Signal-To-Noise Ratio; D013061:Speech Acoustics; D013065:Speech Intelligibility; D013067:Speech Perception; D013997:Time Factors; D013998:Time Perception; D055815:Young Adult
references: Hear Res. 2009 Sep;255(1-2):99-108
references: 19539016
references: J Acoust Soc Am. 2003 Jul;114(1):446-54
references: 12880055
references: J Acoust Soc Am. 2011 Jul;130(1):273-82
references: 21786897
references: J Acoust Soc Am. 1980 Jan;67(1):318-26
references: 7354199
references: J Acoust Soc Am. 2011 Feb;129(2):977-88
references: 21361454
references: J Acoust Soc Am. 2010 Oct;128(4):2075-84
references: 20968378
references: J Acoust Soc Am. 2003 Feb;113(2):961-8
references: 12597189
references: Science. 1972 Jun 9;176(4039):1149-51
references: 5035477
references: J Acoust Soc Am. 2006 Apr;119(4):2438-44
references: 16642856
references: J Speech Hear Res. 1985 Sep;28(3):455-62
references: 4046587
references: J Acoust Soc Am. 1977 May;61(5):1337-51
references: 881487
references: J Acoust Soc Am. 2006 Mar;119(3):1562-73
references: 16583901
references: Ear Hear. 2012 Jan-Feb;33(1):112-7
references: 21829134
references: J Acoust Soc Am. 2004 Sep;116(3):1671-80
references: 15478433
references: Nature. 2002 Mar 7;416(6876):87-90
references: 11882898
references: J Assoc Res Otolaryngol. 2009 Sep;10(3):407-23
references: 19365691
references: J Acoust Soc Am. 2006 Apr;119(4):2417-26
references: 16642854
references: Hear Res. 2006 Jan;211(1-2):74-84
references: 16289579
references: J Acoust Soc Am. 2009 Jun;125(6):4023-33
references: 19507983
references: J Acoust Soc Am. 1996 Dec;100(6):3769-73
references: 8969478
references: J Exp Psychol. 1971 Aug;89(2):244-9
references: 5567132
references: J Acoust Soc Am. 2011 Dec;130(6):4044-52
references: 22225058
references: J Acoust Soc Am. 2005 Oct;118(4):2412-20
references: 16266163
references: Proc Natl Acad Sci U S A. 2006 Dec 5;103(49):18866-9
references: 17116863
references: J Acoust Soc Am. 2004 Sep;116(3):1351-4
references: 15478399
references: Hear Res. 1990 Aug 1;47(1-2):103-38
references: 2228789
references: Science. 1970 Jan 23;167(3917):392-3
references: 5409744
references: J Acoust Soc Am. 2001 Sep;110(3 Pt 1):1628-40
references: 11572372
references: Percept Psychophys. 1997 Feb;59(2):275-83
references: 9055622
references: J Acoust Soc Am. 2009 Jan;125(1):442-6
references: 19173429