Archives of Acoustics, 40, 1, pp. 41–50, 2015
10.1515/aoa-2015-0006

The Influence of the Semantic Material on the Assessment of Speech Reception Threshold

Magdalena KRENZ
Institute of Acoustics, Faculty of Physics, A.Mickiewicz University in Poznań
Poland

Andrzej WICHER
Institute of Acoustics, Faculty of Physics, A.Mickiewicz University in Poznań
Poland

Aleksander SĘK
Institute of Acoustics, Faculty of Physics, A.Mickiewicz University in Poznań
Poland

To determine speech intelligibility using the test suggested by Ozimek et al. (2009), the subject composed sentences with the words presented on a computer screen. However, the number and the type of these words were chosen arbitrarily. The subject was always presented with 18, similarly sounding words. Therefore, the aim of this study was to determine whether the number and the type of alternative words used by Ozimek et al. (2009), had a significant influence on the speech intelligibility. The aim was also to determine an optimal number of alternative words: i.e., the number that did not affect the speech reception threshold (SRT) and not unduly lengthened the duration of the test. The study conducted using a group of 10 subjects with normal hearing showed that an increase in the number of words to choose from 12 to 30 increased the speech intelligibility by about 0.3 dB/6 words. The use of paronyms as alternative words as opposed to random words, leads to an increase in the speech intelligibility by about 0.6 dB, which is equivalent to a decrease in intelligibility by 15 percentage points. Enlarging the number of words to choose from, and switching alternative words to paronyms, led to an increase in response time from approximately 11 to 16 s. It seems that the use of paronyms as alternative words as well as using 12 or 18 words to choose from is the best choice when using the Polish Sentence Test (PST).
Keywords: speech intelligibility, speech test, speech reception threshold
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Copyright © Polish Academy of Sciences & Institute of Fundamental Technological Research (IPPT PAN).

References

Ozimek, E., Kutzner, D., Sęk, A., Wicher, A., and Szczepaniak, O. (2006). "The Polish sentence test for speech intelligibility evaluation," Archives of Acoustics 31, 431-438.

Pruszewicz, A., Demenko, G., Richter, L., and Wika, T. (1994a). "New articulation lists for speech audiometry. Part I.," Otolaryngol.Pol. 48, 50-55.

Pruszewicz, A., Demenko, G., Richter, L., and Wika, T. (1994b). "New articulation lists for speech audiometry. Part II.," Otolaryngol.Pol. 48, 56-62.

Brachmański, and Staroniewicz, P. (1999). "Fonetyczna struktura materiału testowego stosowanego w subiektywnych pomiarach jakości mowy," in Speech and Language Technology (Poznań).

Ozimek, E., Kutzner, D., Sęk, A., and Wicher, A. (2009). "Polish sentence tests for measuring the intelligibility of speech in interfering noise," International Journal of Audiology 48, 433-443.

Plomp, R., and Mimpen, A. M. (1979). "Improving the reliability of testing the speech reception threshold for sentences," Audiol. 18, 43-53.

Fastl, H. (1987). "A background noise for speech audiometry," Audiological Acoustics 26, 2-13.

Versfeld, N. J., Daalder, L., Festen, J. M., and Houtgast, T. (2000). "Method for the selection of sentence materials for efficient measurement of the speech reception threshold," The Journal of the Acoustical Society of America 107, 1671-1684.

Kollmeier, B., and Wesselkamp, M. (1997). "Development and evaluation of a German sentence test for objective and subjective speech intelligibility assessment," The Journal of the Acoustical Society of America 102, 2412-2421.

Kidd Jr., G., Mason, C. R., Richards, V. M., Gallun, F. J., and I., D. N. (2007). "Informational masking," in Auditiry Perception of Sound Sources, edited by Yost, W. A., A. N. Popper and R. R. Fay (Springer)

Cooke, M., Garcia Lecumberri, M. L., and Barker, J. (2008). "The foreign language cocktail party problem: Energetic and informational masking effects in non-native speech perception," The Journal of the Acoustical Society of America 123, 414-427.

Shinn-Cunningham, B. (2013). "Understanding informational masking from a neural perspective," Proceedings of Meetings on Acoustics 19.

Brungart, D., Iyer, N., Thompson, E. R., Simpson, B. D., Gordon-Salant, S., Schurman, J., et al. (2013). "Interactions between listening effort and masker type on the energetic and informational masking of speech stimuli," Proceedings of Meetings on Acoustics 19.

Levitt, H. (1971). "Transformed up-down methods in psychoacoustics," J. Acoust. Soc. Am. 49, 467-477.

Głowiński, M., Kostkiewiczowa, T., Okopień-Sławińska, A., and Sławiński, J. (1998). Słownik terminów literackich (Ossolineum, Wrocław).

Kita, M., and Polański, E. (2004). Słownik paronimów czyli wyrazów mylonych (PWN, Poznań).

Lane, P., Galwey, N., and Alvey, N. (1987). Genstat 5. An Introduction (Clarendon Press, Oxford).

Kluk, K., and Moore, B. C. J. (2001). "Wyrazistość logatomów prezentowanych na tle szumu mowopodobnego dla osób z niedosłuchem typu 'martwe pola' w zakresie wysokich częstotliwości," in OSA 2001 (Wrocław-Polanica Zdrój).




DOI: 10.1515/aoa-2015-0006