| Autor: |
Bess, F. H., Clack, T. D. |
| Zdroj: |
Journal of the Acoustical Society of America; 1970, Vol. 47 Issue 1A, p107-108, 2p |
| Abstrakt: |
The purpose of this study was two fold: to determine (1) is pure-tone monaural masking patterns in abnormal ears differed from normals; and (2) if a relationship exists between the spread of masking and speech intelligibility. Using 125-, 250- and 500-Hz maskers at three intensities, thresholds were measured at octave intervals in seven normals and 18 sensorineural impaired listeners. Articulation functions for each ear were obtained with the Rush Hughes List. The masking results from normals are consistent with previous findings. Patterns for abnormals, however, display wide individual differences, especially at frequencies above the masker. Some abnormals displayed extensive masking (20-30 dB) at 3 and 4 oct above the masker, while exhibiting a minimum degree of masking nearer the masker. An attempt is made to establish a relationship between speech intelligibility scores and the spread of masking. The data are discussed under the hypothesis that low-formant energy masks higher-frequency cues in the speech signal. [ABSTRACT FROM AUTHOR] |
| Databáze: |
Complementary Index |
| Externí odkaz: |
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