Additive masking effects of noise bands of different levels
| Autor: | Arnold M. Small, Richard S. Tyler |
|---|---|
| Rok vydání: | 1978 |
| Předmět: |
Adult
Masking (art) Acoustics and Ultrasonics Acoustics Gaussian Perceptual Masking Auditory Threshold Filter (signal processing) Models Biological Cutoff frequency symbols.namesake Acoustic Stimulation Arts and Humanities (miscellaneous) Step function symbols Range (statistics) Humans Filtration Noise (radio) Psychophysiology Mathematics |
| Zdroj: | The Journal of the Acoustical Society of America. 63:894-904 |
| ISSN: | 0001-4966 |
| DOI: | 10.1121/1.381769 |
| Popis: | The simultaneous, ipsilateral masking of a sinusoid of frequency fs (600–860 Hz), located near the common cutoff frequency fc (750 Hz) of a low‐pass and high‐pass noise was examined as a function of the level of each of the bands. The pressure spectrum level of the high‐frequency band Lh ranged from 5–50 dB re 20 μPa in 15‐dB steps and the level of the low‐frequency band L1 was from 0–24 dB down from each of these levels. The computer‐synthesized noise provided a spectral step function transition at fc. The data generated by each of the three listeners in the 4IFC adaptive task was virtually identical. When fs≫fc masking was determined simply by Lh, and when fs≪fc masking was generally equal to but sometimes greater than that attributable solely to L1. When fs?fc, masking was intermediate relative to the asymptotic values just mentioned. The data are consistent with a conceptual auditory filter which has a Gaussian shape, an equivalent rectangular width of 110 Hz (for the limited frequency range considere... |
| Databáze: | OpenAIRE |
| Externí odkaz: |
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