Spectral and binaural loudness summation in bilateral hearing aid fitting
Aversiveness of loud sounds is a frequent complaint by hearing-aid users, especially when fitted bilaterally. This study investigates whether loudness summation can be held responsible for this finding. Two aspects of loudness summation should be taken into account: spectral loudness summation for broadband signals and binaural loudness summation for signals that are presented binaurally. In this study different aspects were investigated: (1) the effect of different symmetrical hearing losses according to the classification of Bisgaard et al. (2010): N2, N3, N4, S2, and S3, and (2) the effect of spectral shape of broadband signals, by using high frequency noise and low frequency noise. For the measurements we used a well-standardized technique “Adaptive Categorical Loudness Scaling” (ACALOS). Also loudness matching was applied as a potentially clinical technique to get information about the individual loudness perception. Results show large individual differences in binaural loudness perception especially for broadband stimuli.
Boymans, M., Goverts, S.T., Kramer, S.E., Festen, J.M., and Dreschler, W.A. (2008). “A prospective multi-centre study of the benefits of bilateral hearing aids,” Ear Hearing, 29, 930-941.
Boymans, M., Goverts, S.T., Kramer, S.E., Festen, J.M., and Dreschler, W.A. (2009). “Candidacy for bilateral hearing aids: a retrospective multicenter study,” J. Speech Lang. Hear. Res., 52, 130-140.
Brand, T., and Hohmann, V. (2002). “An adaptive procedure for categorical loudness scaling,” J. Acoust. Soc. Am., 112, 1597-1604.
Byrne, D., Dillon, H., Tran, K., Arlinger, S., Wilbraham, K., Cox, R., Hagerman, B., et al. (1994). “An international comparison of long-term average speech spectra,” J. Acoust. Soc. Am., 96, 2108-2120.
Byrne, D. Dillon, H., Ching, T., Katsch, R., and Keidser, G. (2001). “NAL-NL1 procedure for fitting nonlinear hearing aids: characteristics and comparisons with other procedures.,” J. Am. Acad. Audiol., 12, 37-51.
Dillon, H. (2012). Hearing Aids Second Edition. Sydney, Australia: Boomerang Press, pp. 226.
Ewert, S.D. (2013). “AFC – a modular framework for running psychoacoustic experiments and computational perception models,” 39 Tagung der Deutschen Arbeitsgemeinschaft für Akustik (DAGA).
Fastl, H., and Zwicker, E. (2007). In: Psychoacoustics: Facts and Models, third ed. Springer, Berlin.
Herzke, T., and Hohmann, V. (2005). “Effects of instantaneous multiband dynamic compression on speech intelligibility,” EURASIP J. App. Sig. P., 18, 3034-3043.
Hickson, L., Clutterbuck, S., and Khan, A. (2010). “Factors associated with hearing aid fitting outcomes on the IOI-HA,” Int. J. Audiol., 49, 586-595.
ISO 389-8 (2004). Acoustics - Reference zero for the calibration of audiometric equipment.
Keidser, G., Dillon, H., Carter, L., and O’Brien, A. (2012). “NAL-NL2 empirical adjustments,” Trends Amplif., 16, 211-223.
Kochkin, S. (2009). “MarkeTrak VIII: 25-year trends in the hearing health market,” Hearing Review, 16, 12-31.
Kohlrausch, A., Fassel, R., van der Heijden, M., Kortekaas, R., van de Par, S., Oxenham, A.J., and Püschel, D. (1997). “Detection of tones in low-noise noise: Further evidence for the role of envelope fluctuations,” Acta Acust. United Ac., 83, 659-669.
Jenstad, L.M., Van Tasell, D.J., and Ewert, C. (2003). “Hearing aid troubleshooting based on patients’ descriptions,” J. Am. Acad. Audiol., 14, 347-360.
Oetting, D., Brand, T., and Ewert, S.D. (2014). “Optimized loudness-function estimation for categorical loudness scaling data,” Hear. Res., 316, 16-27.
Oetting, D., Hohmann, V., Appell, J.-E., Kollmeier, B., and Ewert, S.D. (2016). “Spectral and binaural loudness summation for hearing-impaired listeners,” Hear. Res., 335, 179-192.
Authors who publish with this journal agree to the following terms:
a. Authors retain copyright* and grant the journal right of first publication with the work simultaneously licensed under a Creative Commons Attribution License that allows others to share the work with an acknowledgement of the work's authorship and initial publication in this journal.
b. Authors are able to enter into separate, additional contractual arrangements for the non-exclusive distribution of the journal's published version of the work (e.g., post it to an institutional repository or publish it in a book), with an acknowledgement of its initial publication in this journal.
c. Authors are permitted and encouraged to post their work online (e.g., in institutional repositories or on their website) prior to and during the submission process, as it can lead to productive exchanges, as well as earlier and greater citation of published work (See The Effect of Open Access).
*From the 2017 issue onward. The Danavox Jubilee Foundation owns the copyright of all articles published in the 1969-2015 issues. However, authors are still allowed to share the work with an acknowledgement of the work's authorship and initial publication in this journal.