AA222 Instructions for Use – US Page 42
3.7.1.4 Speech audiometry
Speech audiometry has the advantage of using a speech signal and is used to quantify the patient’s ability to
understand everyday communication. It examines the patient’s processing ability in relation to the degree
and type of their hearing loss which can vary greatly between patients with the same hearing loss
configuration.
Speech audiometry can be performed using a number of tests.
SRT (Speech Reception Threshold) refers to the level at which the patient can repeat 50% of the presented
words correctly. It serves as a check of the pure tone audiogram, gives an index of hearing sensitivity for
speech and helps determine the starting point for other supra-threshold measures such as WR (Word
Recognition).
WR is sometimes also referred to as SDS (Speech Discrimination Scores) and represents the number of
words correctly repeated, expressed as a percentage. Use Correct (36) or Incorrect (37) to indicate the word
recognition. When doing so, the word recognition score is calculated automatically.
Speech testing can be done via pre-recorded wave files (26), CD input (26) or microphone (27) and can be
run in either graphical mode or table mode.
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