Gap detection as a function of frequency, bandwidth, and level
- 1 August 1983
- journal article
- research article
- Published by Acoustical Society of America (ASA) in The Journal of the Acoustical Society of America
- Vol. 74 (2), 467-473
- https://doi.org/10.1121/1.389812
Abstract
The threshold for detection of a temporal gap in a noiseband was measured [in humans]. A notched noise masker was used to restrict listening to a limited spectral region. Threshold was measured as a function of center frequency, bandwidth, and level. For a signal bandwidth of 1/2 the center frequency, the gap threshold decreased from 22.5 ms for a center frequency of 0.2 kHz to 3.2 ms at 8.0 kHz: a wideband condition provided an estimate of 2.3 ms, a value in agreement with previously published estimates. Bandwidth manipulation showed that the variation with frequency was not due to changes in absolute bandwidth alone. The effect of changes in level was determined at three frequencies, 0.4, 1.0, and 6.5 kHz, using a signal bandwidth of half the center frequency. At all frequencies gap threshold decreased as the signal spectrum level was raised from 10 to 25 dB, but a further increase to 40 dB showed no additional improvement. At frequencies up to about 1.0 kHz, the variation of gap threshold with frequency matches well the reciprocal of the bandwidth of the auditory filter, as determined from masking experiments using a notched-noise masker. The temporal response of the auditory filter may limit gap detection at low frequencies.This publication has 12 references indexed in Scilit:
- Gap detection in normal and hearing-impaired listenersThe Journal of the Acoustical Society of America, 1982
- Measurement of basilar membrane motion in the guinea pig using the Mössbauer techniqueThe Journal of the Acoustical Society of America, 1982
- Basilar Membrane Tuning in the Cat CochleaScience, 1982
- Temporal Acuity in Normal and Hearing-Impaired ListenersInternational Journal of Audiology, 1981
- Frequency Selectivity in Normally-Hearing and Hearing-Impaired ObserversJournal of Speech, Language, and Hearing Research, 1980
- Detection of temporal gaps in noise as a measure of the decay of auditory sensationThe Journal of the Acoustical Society of America, 1977
- Transient response of the basilar membrane measured in squirrel monkeys using the Mössbauer effectThe Journal of the Acoustical Society of America, 1976
- Auditory filter shapes derived with noise stimuliThe Journal of the Acoustical Society of America, 1976
- Rate of Decay of Auditory SensationThe Journal of the Acoustical Society of America, 1964
- Experimentelle Untersuchung der einfachsten psychischen ProcessePflügers Archiv - European Journal of Physiology, 1875