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Updated: May 7, 2026

Testing Tactile Masking between the Forearms
Published on: February 10, 2016
Nonadditivity of forward and simultaneous masking
Adam Svec1, Suyash N Joshi, Walt Jesteadt
1Center for Hearing Research, Boys Town National Research Hospital, 555 N. 30th Street, Omaha, Nebraska 68131.
Additional masking, a measure of auditory perception, increases with masker level and signal delay. Findings challenge its use in understanding basilar membrane compression and simulating hearing loss.
Area of Science:
- Auditory Neuroscience
- Psychoacoustics
- Signal Processing in Hearing
Background:
- Additional masking quantifies the increase in auditory detection threshold caused by a masker.
- Understanding masking effects is crucial for models of auditory perception and hearing loss simulation.
Purpose of the Study:
- To investigate additional masking from combined forward and simultaneous maskers.
- To examine the influence of forward masker bandwidth, signal delay, and masker level.
Main Methods:
- Measured additional masking with varying forward masker bandwidth, signal delay, and simultaneous masker level.
- Equated the effects of individual forward and simultaneous maskers across conditions.
Main Results:
- Additional masking increased with masker level, signal delay, and decreased forward masker bandwidth.
- The simultaneous masker's contribution was greatest when overlapping with the signal, not the forward masker.
Conclusions:
- Observed relationships challenge the utility of additional masking for assessing basilar membrane compression.
- Findings indicate limitations in using simultaneous noise to accurately simulate hearing loss.
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