Maico MA 42 Operating Instructions

Operating Instructions MA 42
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Press the functional button List (6) to load another word list.
5.2.5 Masking
Speech audiometry has similar masking rules to those described in chapter
5.1.1.1 for pure tone audiometry. The signal of the non-testing ear is set to
speech noise (SN) by the functional selector button signal (11) or (15). This
channel needs to be set to interrupter mode by pressing the channel STIM
Mode button (8) for continuous presentation of the masking noise. Adjust the
level of the masking channel by the corresponding level control (1) for effective
masking.
5.2.6 Speech in noise tests
Performing speech in noise tests, speech and noise are given simultaneously in
two channels but in the same ear. The speech source can be provided by a
microphone, WAVE files or an external CD-player. Select the signal source on
one channel (buttons 11 or 13) and speech noise (SN) on the other channel. To
present the speech in noise in the same ear, the noise channel has to be routed
to the same ear like the speech channel (button 9 or 17). Please make sure that
the speech is presented in interrupter mode (8) in order to present both signals
simultaneously.
Figure 13 - Speech Audiometry with Wave Files

Maico MA 42 Specifications

General

Brand	Maico
Model	MA 42
Category	Medical Equipment
Language	English