title: Application of a short-time version of the Equalization-Cancellation model to speech intelligibility experiments with speech maskers.
abstract: A short-time-processing version of the Equalization-Cancellation (EC) model of binaural processing is described and applied to speech intelligibility tasks in the presence of multiple maskers, including multiple speech maskers. This short-time EC model, called the STEC model, extends the model described by Wan et al. [J. Acoust. Soc. Am. 128, 3678-3690 (2010)] to allow the EC model's equalization parameters τ and α to be adjusted as a function of time, resulting in improved masker cancellation when the dominant masker location varies in time. Using the Speech Intelligibility Index, the STEC model is applied to speech intelligibility with maskers that vary in number, type, and spatial arrangements. Most notably, when maskers are located on opposite sides of the target, this STEC model predicts improved thresholds when the maskers are modulated independently with speech-envelope modulators; this includes the most relevant case of independent speech maskers. The STEC model describes the spatial dependence of the speech reception threshold with speech maskers better than the steady-state model. Predictions are also improved for independently speech-modulated noise maskers but are poorer for reversed-speech maskers. In general, short-term processing is useful, but much remains to be done in the complex task of understanding speech in speech maskers.
authors.affiliation: Hearing Research Center and Department of Biomedical Engineering, Boston University, Boston, Massachusetts 02215.
authors.forename: Rui
authors.initials: R
authors.lastname: Wan
authors.affiliation: Hearing Research Center and Department of Biomedical Engineering, Boston University, Boston, Massachusetts 02215.
authors.forename: Nathaniel I
authors.initials: NI
authors.lastname: Durlach
authors.affiliation: Hearing Research Center and Department of Biomedical Engineering, Boston University, Boston, Massachusetts 02215.
authors.forename: H Steven
authors.initials: HS
authors.lastname: Colburn
mesh_terms: D000161:Acoustic Stimulation; D006801:Humans; D008962:Models, Theoretical; D009622:Noise / Q000009:adverse effects*; D010470:Perceptual Masking; D013065:Speech Intelligibility; D013067:Speech Perception; D013069:Speech Reception Threshold Test; D013997:Time Factors
references.citation: J Acoust Soc Am. 2006 Dec;120(6):3988-97
references.pmid: 17225425
references.citation: J Acoust Soc Am. 1994 Feb;95(2):1053-64
references.pmid: 8132899
references.citation: J Acoust Soc Am. 2005 Apr;117(4 Pt 1):2181-92
references.pmid: 15898659
references.citation: J Acoust Soc Am. 2004 Aug;116(2):1057-65
references.pmid: 15376672
references.citation: J Acoust Soc Am. 1999 Dec;106(6):3578-88
references.pmid: 10615698
references.citation: J Acoust Soc Am. 2010 Apr;127(4):2479-97
references.pmid: 20370031
references.citation: J Acoust Soc Am. 2012 Apr;131(4):3103-10
references.pmid: 22501083
references.citation: J Acoust Soc Am. 2006 Jul;120(1):331-42
references.pmid: 16875230
references.citation: J Acoust Soc Am. 2005 Sep;118(3 Pt 1):1274-7
references.pmid: 16240788
references.citation: J Acoust Soc Am. 2009 Sep;126(3):1359-68
references.pmid: 19739750
references.citation: J Acoust Soc Am. 1967 Sep;42(3):601-8
references.pmid: 6073973
references.citation: J Acoust Soc Am. 2012 Jan;131(1):218-31
references.pmid: 22280586
references.citation: J Acoust Soc Am. 2010 Oct;128(4):1965-78
references.pmid: 20968368
references.citation: J Acoust Soc Am. 2000 Feb;107(2):1065-6
references.pmid: 10687719
references.citation: J Acoust Soc Am. 2001 Nov;110(5 Pt 1):2527-38
references.pmid: 11757942
references.citation: J Acoust Soc Am. 2003 Jun;113(6):2984-7
references.pmid: 12822768
references.citation: J Acoust Soc Am. 2010 Dec;128(6):3678-90
references.pmid: 21218900
references.citation: J Acoust Soc Am. 2010 Jan;127(1):387-99
references.pmid: 20058985
references.citation: J Acoust Soc Am. 2008 Aug;124(2):1146-58
references.pmid: 18681603
references.citation: J Acoust Soc Am. 2012 Oct;132(4):2545-56
references.pmid: 23039448
references.citation: J Acoust Soc Am. 2004 Feb;115(2):833-43
references.pmid: 15000195
references.citation: J Acoust Soc Am. 1967 Oct;42(4):820-9
references.pmid: 6075567