Speech Audiometry - Interacoustics AD528 Manual De Instrucciones

Speech audiometry

NOTICE
Only recognized speech material can be used i.e. material with known relation to the calibration signal.
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 or Incorrect to indicate the word
recognition. When doing so, the word recognition score is calculated automatically.
Speech
1 The stimulus area will light up when a sound is being presented in channel 1.
2 The VU meter indicates the level of the sound being presented in channel 1.
3 This visualizes the dial setting of the stimulus intensity which can be changed by rotating the wheel of
channel 1.
Below the intensity for channel 1 is an indication of the origin of the sound being presented (MIC, WAVE,
or AUX)
4 Type of test is indicated followed by an indication of the measure type selected.
The speech score (%) and the count of words is shown below.
5 The symbol indicates the channels are in sync. Thereby channel 2 will follow the adjustment of channel
1.
6 This visualizes the dial setting of the stimulus intensity which can be changed by rotating the wheel of
channel 2.
Below the intensity for channel 2 is an indication of the type of the sound/masking being presented
(WAVE, AUX 1, AUX2, SN, WN)
7 The sound waves indicates sound is being presented. When a sound is being presented in channel 2
using an external input (AUX or MIC) or a speech signal on channel 2 the VU meter indicates the level of
the sound being presented.
D-0121151-B – 2018/11
AD528 - Instructions for Use - EN Page 23