Assessing the impact of fundamental frequency on speech intelligibility in competing-talker scenarios
When only monaural cues are available in competing-talker scenarios, normal- hearing (NH) listeners are able to identify and understand the target speech while hearing-impaired listeners often experience difficulties. A good understanding of the role of monaural cues in speech segregation is therefore essential for developing hearing-aid compensation strategies. Earlier studies with NH listeners showed that differences in fundamental frequency (∆F0) between the target talker and one interfering talker can facilitate the segregation of the speech signals. However, most of these studies used speech materials that bear little resemblance with everyday speech. Furthermore, the F0 was either defined by talker sex or measured as a talker-specific average, thus ignoring the significant F0 variability across sentences. The present study instead used everyday-speech type sentences from the Danish Hearing in Noise Test (HINT) and employed a more accurate method for assessing the impact of F0 on intelligibility for NH listeners. Compared to previous studies, the overall effect of ∆F0 was found to be smaller and it was hypothesised that the previously employed speech materials might have enhanced the effect of ∆F0 beyond its real-life importance.
Assmann, P. F., and Summerfield, Q. (1990). “Modeling the perception of concurrent vowels: Vowels with different fundamental frequencies,” J. Acoust. Soc. Am., 88(2), 680-697.
Assmann, P. F. (1999). “Fundamental frequency and the intelligibility of competing voices,” in Proc. International Congress of Phonetic Sciences, 179-182.
Boersma, P. (1993). “Accurate short-term analysis of the fundamental frequency and the harmonics-to-noise ratio of a sampled sound,” in Proceedings of the Institute of Phonetic Sciences, 17(1193), 97-110.
Bramsløw, L., Vatti, M., Hietkamp, R.K. and Pontoppidan, N. (2015). “Binaural speech recognition for normal-hearing and hearing-impaired listeners in a competing voice test,” Proc. Speech in Noise, Copenhagen, Denmark.
Bramsløw, L., Vatti, M., Rossing, R., Naithani, G., and Henrik Pontoppidan, N. (2019). “A Competing Voices Test for Hearing-Impaired Listeners Applied to Spatial Separation and Ideal Time-Frequency Masks,” Trends Hear., 23, 1-12.
Brokx, J. P. L., and Nooteboom, S. G. (1982). “Intonation and the perceptual separation of simultaneous voices,” J. Phon., 1(1), 23-36.
Brungart, D. S. (2001). “Informational and energetic masking effects in the perception of two simultaneous talkers,” J. Acoust. Soc. Am., 109(3), 1101-1109.
Darwin, C. J., Brungart, D. S., and Simpson, B. D. (2003). “Effects of fundamental frequency and vocal-tract length changes on attention to one of two simultaneous talkers,” J. Acoust. Soc. Am., 114(5), 2913-2922.
Nielsen, J. B., and Dau, T. (2011). “The Danish hearing in noise test,” Int. J. Audiol., 50(3), 202-208.
Summers, V., and Leek, M. R. (1998). “F0 processing and the seperation of competing speech signals by listeners with normal hearing and with hearing loss,” J. Speech Lang. Hear. Res., 41(6), 1294-1306.
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