Modulation detection interference with two-component masker modulators

Stanley Sheft, William A. Yost

Research output: Contribution to journalArticlepeer-review

16 Scopus citations


Thresholds were measured for detecting amplitude modulation of a single tonal carrier in the presence of modulated maskers. The masker modulator contained either one or two sinusoidal components. As found in previous studies, there was a detrimental effect of masker modulation on the detection of probe modulation. Interference was obtained with a 4-Hz separation between the two components of the masker modulator with the probe modulated at the 4- Hz beat rate. The amount of interference obtained with the two-component masker modulator was greater than that produced by the individual components of the masker modulator. The amount of interference increased with the depth of the masker-modulator beating and the number of masker carders. The interference due to beating of the masker-modulator components was reduced when the beat rate was increased from 4 to 10 Hz. Results obtained with two- component masker modulators indicate a masking effect not predicted by a spectral representation of the probe and masker envelopes.

Original languageEnglish (US)
Pages (from-to)1106-1112
Number of pages7
JournalJournal of the Acoustical Society of America
Issue number2
StatePublished - Aug 1997
Externally publishedYes

ASJC Scopus subject areas

  • Arts and Humanities (miscellaneous)
  • Acoustics and Ultrasonics


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