Real ear measurement showing probe microphone in place and RIC hearing aid.
Synonyms
Insitu- or Probe microphone measurement[1]
Purpose
measure of sound pressure in ear
Real ear measurement is the measurement of sound pressure level in a patient's ear canal developed when a hearing aid is worn. It is measured with the use of a silicone probe tube inserted in the canal connected to a microphone outside the ear and is done to verify that the hearing aid is providing suitable amplification for a patient's hearing loss.[2] The American Speech–Language–Hearing Association (ASHA) and American Academy of Audiology (AAA) recommend real ear measures as the preferred method of verifying the performance of hearing aids.[3][4]
Used by audiologists and other hearing healthcare practitioners in the process of hearing aid fitting, real ear measures are the most reliable and efficient method for assessing the benefit provided by the amplification.[5] Measurement of the sound level in the ear canal allows the clinician to make informed judgements on audibility of sound in the ear and the effectiveness of hearing aid treatment.
The use of real ear measurement to assess the performance of hearing aids is covered in the ANSI specification Methods of Measurement of Real-Ear Performance Characteristics of Hearing Aids, ANSI S3.46-2013 (a revision of ANSI S3.46-1997).[6]
^Stach, Brad (2003). Comprehensive Dictionary of Audiology (2nd ed.). Clifton Park NY: Thompson Delmar Learning. p. 167. ISBN 978-1-4018-4826-2.
^Valente, Michael; John E. Tecca (1994). "Chapter 5". Strategies for Selecting and Verifying Hearing Aid Fittings. NY: Thieme Medical Publishers. p. 88. ISBN 978-0-86577-500-8.
^ASHA Ad Hoc Committee on Hearing Aid Selection and Fitting (1998). "Guidelines for Hearing Aid Fitting for Adults". American Journal of Audiology. 7 (5–13): 5–13. doi:10.1044/1059-0889.0701.05.
^Valente, Michael; Harvey Abrams; Darcy Benson; Theresa Chisolm; Dave Citron; Dennis Hampton, Angela Loavenbruck, Todd Ricketts, Helena Solodar, Robert Sweetow (2007). "Guidelines for the Audiologic Management of Adult Hearing Impairment" (PDF). American Academy of Audiology. Archived from the original (PDF) on 25 July 2013. Retrieved 3 February 2014.{{cite web}}: CS1 maint: multiple names: authors list (link)
^Jack Katz; Larry Medwetsky; Robert Burkard; Linda Hood (2009). "Chapter 38, Hearing Aid Fitting for Adults: Selection, Fitting, Verification, and Validation". Handbook of Clinical Audiology (6th ed.). Baltimore MD: Lippincott Williams & Wilkins. p. 858. ISBN 978-0-7817-8106-0.
^ANSI/ASA Standard S3.46-2013 "Methods of Measurement of Real-Ear Performance Characteristics of Hearing Aids," Acoustical Society of America, Melville, New York, http://acousticalsociety.org/
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