Earphone-Coupling Technique for Measuring the Temporal Characteristics of Aural Acoustic-Immittance Devices This research note describes an earphone-coupling technique that can be used to measure the temporal characteristics of acoustic-immittance instruments. The primary advantage of the earphone-coupling procedure in comparison with the procedure described by Popelka and Dubno (1978) is that the temporal measures are not contaminated by delays and irregularities in ... Research Note
Research Note  |   June 01, 1985
Earphone-Coupling Technique for Measuring the Temporal Characteristics of Aural Acoustic-Immittance Devices
 
Author Affiliations & Notes
  • Janet E. Shanks
    VA Medical Center, Long Beach, CA; University of California, Irvine
  • Richard H. Wilson
    VA Medical Center, Long Beach, CA; University of California, Irvine
  • Howard C. Jones
    VA Medical Center, Long Beach, CA; University of California, Irvine
Article Information
Research Notes
Research Note   |   June 01, 1985
Earphone-Coupling Technique for Measuring the Temporal Characteristics of Aural Acoustic-Immittance Devices
Journal of Speech, Language, and Hearing Research, June 1985, Vol. 28, 305-308. doi:10.1044/jshr.2802.305
History: Received September 4, 1984 , Accepted January 3, 1985
 
Journal of Speech, Language, and Hearing Research, June 1985, Vol. 28, 305-308. doi:10.1044/jshr.2802.305
History: Received September 4, 1984; Accepted January 3, 1985

This research note describes an earphone-coupling technique that can be used to measure the temporal characteristics of acoustic-immittance instruments. The primary advantage of the earphone-coupling procedure in comparison with the procedure described by Popelka and Dubno (1978) is that the temporal measures are not contaminated by delays and irregularities in the coupler sound-pressure level associated with the pressure system. The latencies of two instruments (Grason-Stadler, Model 1723) were compared using dais earphone-coupling procedure and the Popelka-Dubno procedure. The latency measures were in good agreement following a correction for the delay associated with the pressure tubing in the latter procedure. The technique described is offered as an alernative to the Popelka-Dubno procedure in the absence of a modified 2-cm3 coupler, particularly for instruments with complex pressure systems.

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