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Audiological Diagnostics Glossary

102 terms total — 24 showing — Last updated 15 Sep 2026

Pure-Tone Audiometry PTA

Basic Technical IVT

A behavioural hearing test that measures an individual's hearing thresholds for pure tones at discrete frequencies to determine the degree and configuration of hearing loss.

Showing 25–48 of 102

Békésy Audiometry

Professional Technical IVT

A self-recording audiometric technique in which the patient continuously tracks their own hearing threshold by pressing...

Technical Term Full entry →

Bone Conduction Audiometry

Intermediate Technical IVT

A hearing test that delivers sound vibrations directly to the cochlea via a bone oscillator placed on the mastoid proces...

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Carhart Notch

Advanced Technical IVT

A mechanical artefact on the bone-conduction audiogram—characteristically a dip of approximately 5–15 dB at 2000 Hz—asso...

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Cochlear Implant Mapping

Advanced Technical IVT

The programming process by which an audiologist sets the stimulation parameters of a cochlear implant's speech processor...

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Conditioned Play Audiometry

Intermediate Technical IVT

A paediatric behavioural test method in which children aged approximately 2.5–5 years are conditioned to perform a play...

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Conductive Hearing Loss

Basic Technical IVT

Hearing loss caused by a problem in the outer or middle ear that prevents sound from being efficiently conducted to the...

Technical Term Full entry →

Configuration of Hearing Loss

Intermediate Technical IVT

The shape of the hearing threshold pattern across test frequencies as plotted on an audiogram, described by terms such a...

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Contralateral Routing of Signal

Intermediate Technical IVT

A hearing device configuration in which sound picked up on the side of a non-functional or absent ear is wirelessly rout...

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Crossed Acoustic Reflex

Advanced Technical IVT

An acoustic reflex measured in the ear contralateral to the ear receiving the eliciting stimulus, testing the integrity...

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daPa

Intermediate Technical IVT

Abbreviation for decapascals; the unit of pressure used to measure middle ear pressure in tympanometry.

Abbreviation Full entry →

dB HL

Intermediate Technical IVT

Decibels hearing level; the unit used in clinical audiometry to express hearing thresholds relative to the average thres...

Abbreviation Full entry →

dB SPL

Intermediate Technical IVT

Decibels sound pressure level; an absolute physical measure of sound pressure referenced to 20 micropascals (20 μPa), th...

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Degree of Hearing Loss

Intermediate Formal IVT

A categorical classification of hearing impairment severity based on pure-tone average thresholds, ranging from normal t...

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Dichotic Listening Test

Advanced Technical IVT

A diagnostic procedure in which different auditory stimuli are presented simultaneously to each ear to assess central au...

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DPOAE

Advanced Technical IVT

Distortion-Product Otoacoustic Emission; a frequency-specific type of otoacoustic emission generated by the cochlea in r...

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Dynamic Range

Intermediate Technical IVT

The span of intensity levels between a patient's hearing threshold and their uncomfortable loudness level, representing...

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Electrocochleography

Advanced Technical IVT

An electrophysiological test that records electrical potentials generated by the cochlea and auditory nerve in response...

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Equivalent Ear Canal Volume

Advanced Technical IVT

An estimate of the volume of air between the probe tip and the tympanic membrane, measured during tympanometry and used...

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Eustachian Tube Dysfunction

Intermediate Technical IVT

Impaired function of the Eustachian tube that disrupts pressure equalisation in the middle ear, contributing to conducti...

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Functional Gain

Intermediate Technical IVT

The difference in decibels between unaided and aided soundfield thresholds, used to estimate the real-world benefit of a...

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Hearing Conservation Programme

Intermediate Formal IVT

A structured occupational health initiative designed to prevent noise-induced hearing loss through monitoring, engineeri...

Document Type Full entry →

Hearing Handicap Inventory

Intermediate Semi-formal IVT

A self-report questionnaire designed to quantify the emotional and social impact of hearing loss on a patient's daily li...

Document Type Full entry →

Hyperacusis

Intermediate Technical IVT

A condition characterised by abnormal sensitivity or intolerance to everyday environmental sounds at intensities that mo...

Technical Term Full entry →

Immittance

Intermediate Technical IVT

A portmanteau umbrella term encompassing both impedance and admittance measurements of the middle ear system, used to de...

Technical Term Full entry →
Showing 25–48 of 102

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