pure tone average

Also found in: Acronyms.

pure tone av·er·age

(pyūr tōn av'răj')
The average hearing threshold level for the pure tone frequencies of 500 Hz, 1 kHz, and 2 kHz. These frequencies are referred to as speech frequencies because many of the English phonemes are within this frequency range. The pure tone average is a reliable indicator of the dB level at which a listener can hear speech.
References in periodicals archive ?
Abbreviations: HL = hearing level, MEC = mobile examination center, NCHS = National Center for Health Statistics, NHANES = National Health and Nutrition Examination Survey, NHIS = National Health Interview Survey, PTA = pure tone average, VA = Department of Veterans Affairs, VAMC = VA medical center, VBA = Veterans Benefits Administration, VHA = Veterans Health Administration.
Pure tone average thresholds (in decibel hearing level for 0.
Two metrics commonly used to define hearing loss in terms of pure tone thresholds are the traditional pure tone average (PTA) of thresholds at 500, 1,000, and 2,000 Hz and the high-frequency PTA (HFPTA) of thresholds at 1,000, 2,000, and 4,000 Hz [19].
Abbreviations: ANOVA = analysis of variance, EHLS = Epidemiology of Hearing Loss Study, HFPTA = high-frequency pure tone average, HHIE-S = Hearing Handicap Inventory for the Elderly-Screening (version), HL = hearing level, LE = left ear, NU-6 = Northwestern University Auditory Test No.
For years, hearing impairment typically has been defined by the unaided pure tone average (PTA) of the air-conduction thresholds at 500, 1,000, and 2,000 Hz.