Maico MA 33, Руководство по эксплуатации

Страница: 59 / 88

Operation Manual MA 33
8100092 Rev. 9 57 19/08/2019
Figure 78 shows the General Function Keys of the Speech Audiometry screen. See Table 14
for an explanation of the buttons.
Figure 78
Table 14 Speech Audiometry Screen
– Explanation of Buttons
Button Information
Delete Deletes the previous measurement.
Load Loads a previously stored measurement (i.e. test result). The loaded
wave will be displayed in different color.
Save Saves current measurement.
Settings Different setting options are available.
Print Prints directly.
Exit Ends the Program.
Remarks Comments and additional remarks can be added here.
Notes After loading a previous measurement, the tone screen appears on the
display. To go back and view the loaded measurement, select the
Speech button in the top, right-hand corner of the tone screen.
State Indicates if the instrument is properly connected to PC.
5.6.2 Performing the Speech Test
5.6.2.1 General
The speech-recognition threshold SRT is the hearing threshold for speech. It is the lowest
level at which the patient correctly recognizes the stimuli 50 % of the time. Usually,
recognition is indicated by repetition of the speech-stimulus item. The speech test can be
done with recorded speech test material from CD-ROM or WAVE file or with the
microphone and live voice using standardized word lists. Different methods for speech
tests are standardized worldwide such as the ASHA guidelines for determining the
threshold level for speech.
After entering the speech screen, select the source and method of speech generation
(Microphone, WAVE File, CD-ROM). Also choose what type of measurement you would
like to store (SRT, WRS, MCL, etc.)
Explain to the patient that he should repeat each word he hears. The patient should sit at
a distance of at least 1 m from the device. Eliminate any obstructions which will interfere
with the placement of the earphone cushions on the ear (i.e. hair, eyeglasses).