Stimulus-frequency otoacoustic emissions measured with amplitude-modulated suppressor tones (L)

Stephen T Neely, Tiffany A. Johnson, Cassie A. Garner, Michael P Gorga

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14 Scopus citations

Abstract

Stimulus-frequency otoacoustic emissions (SFOAEs) are typically derived as the difference in sound pressure in the ear canal with and without a suppressor tone added to the probe tone. A novel variation of this method applies a sinusoidal amplitude modulation (AM) to the suppressor tone, which causes the SFOAE to also be modulated. The AM-SFOAE can be separated from the probe frequency using spectral methods. AM-SFOAE measurements are described for four normal-hearing subjects using 6-Hz AM. Because the suppressor modulation is at a higher rate, the AM-SFOAE technique avoids the confounding influence of heartbeat, which also modulates the probe tone.

Original languageEnglish (US)
Pages (from-to)2124-2127
Number of pages4
JournalJournal of the Acoustical Society of America
Volume118
Issue number4
DOIs
Publication statusPublished - Oct 1 2005

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ASJC Scopus subject areas

  • Arts and Humanities (miscellaneous)
  • Acoustics and Ultrasonics

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