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Loudness summation of equal loud narrowband signals in normal-hearing and hearing-impaired listeners.
- Source :
-
International Journal of Audiology . 2018 Supplement, Vol. 57, pS71-S80. 10p. 9 Graphs. - Publication Year :
- 2018
-
Abstract
- Objective: Loudness perception of binaural broadband signals, e.g. speech shaped noise, shows large individual differences using frequency-dependent amplification which was adjusted to restore the loudness perception of monaural narrowband signals in hearing-impaired (HI) listeners. To better understand and quantify this highly individual effect, loudness perception of broadband stimuli consisting of a number of spectrally separated narrowband components which where individually adjusted to equal loudness is of interest. Design: Based on categorical loudness scaling, the loudness of an equal categorical loudness noise (ECLN) consisting of six third-octave noises was assessed. For loudness categories “medium” und “very loud” the required narrowband loudness was analysed. Study sample: Nine normal-hearing (NH) and ten HI listeners. Results: HI listeners showed lower narrowband loudness values compared to NH listeners, indicating an increased spectral loudness summation. More than 50% of the HI listeners showed higher binaural spectral loudness summation compared to NH listeners. The amount of binaural spectral loudness summation was highly correlated (r2 = 0.92) with the loudness level at “very loud” of aided speech shaped noise. Conclusions: The suggested ECLN measurement is suited to assess individual (binaural) broadband loudness in aided conditions, providing valuable information for hearing-aid fitting. [ABSTRACT FROM AUTHOR]
Details
- Language :
- English
- ISSN :
- 14992027
- Volume :
- 57
- Database :
- Academic Search Index
- Journal :
- International Journal of Audiology
- Publication Type :
- Academic Journal
- Accession number :
- 130378557
- Full Text :
- https://doi.org/10.1080/14992027.2017.1380848