Model-based loudness compensation for broad- and narrow-band signals
A fundamental problem when attempting to restore loudness perception in hearing-impaired listeners are differences in the loudness perception of narrow- and broad-band signals when compared to normal-hearing listeners. Here, a multi-channel dynamic compression algorithm is presented where the signal-to-masking ratio (SMR) is used to modify the channel gain function. Result 1: The evaluation of this approach using a loudness model showed that the loudness perception of hearing-impaired listeners can be restored to the loudness perception of a normal-hearing listener for signals with different bandwidths. Result 2: Inconsistencies between the individual measured loudness function using the categorical loudness scaling procedure and the model predictions were found. The available model parameters, being i) hearing threshold level, ii) outer, and iii) inner hair-cell loss, were not sufficient to fit the model to the individual narrow-band loudness perceptions.
Brand T., and Hohmann, V. (2002). “An adaptive procedure for categorical loudness scaling,” J. Acoust. Soc. Am., 112, 1597-1604.
Chen, Z., Hu, G., Glasberg, B.R., and Moore, B.C.J. (2011). “A new model for calculating auditory excitation patterns and loudness for cases of cochlear hearing loss,” Hear. Res., 282, 69-80.
Chen, Z., and Hu, G. (2013). “CHENFIT-AMP, a nonlinear fitting and amplification strategy for cochlear hearing loss,” IEEE T. Bio-Med. Eng., 60, 3226-3237.
Fastl, H., and Zwicker, E. (2007). Psychoacoustics: Facts and Models (Springer, Berlin), Third Ed.
Heeren, W., Hohmann, V., Appell, J.E., and Verhey, J.L. (2013). “Relation between loudness in categorical units and loudness in phons and sones,” J. Acoust. Soc. Am., 133, EL314-EL319.
Herzke, T., and Hohmann, V. (2005). “Effects of instantaneous multiband dynamic compression on speech intelligibility,” EURASIP J. App. Sig. P., 18, 3034-3043.
Holube, I., Fredelake, S., Vlaming, M., and Kollmeier, B. (2010). “Development and analysis of an International Speech Test Signal (ISTS),” Int. J. Audiol., 49, 891-903.
Latzel, M., Margolf-Hackl, S., Denkert, J., and Kießling, J. (2004). “Präskriptive Hörgeräteanpassung auf Basis von NAL-NL1 im Vergleich mit einem lautheitsbasierten Verfahren,” DGA 7. Jahrestagung.
Moore, B.C.J., and Glasberg, B.R. (1997). “A model of loudness perception applied to cochlear hearing loss,” Audit. Neurosci., 3, 289-311.
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