otometrics MADSEN Midimate 622, Руководство пользователя

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Choosing F.F. in pure tone audiometry automatically selects warble
tone as the stimulus signal. Warble Tone
Stimulus
5. Place the patient in the sound cabin facing away from the audiometer
and ensure that the left and right speakers are facing the corresponding
ears. If no sound cabin is available, ensure that there is a minimum of
ambient noise otherwise this form of testing is of no value.
6. Instruct the patient in usage of Patient Response Handswitch and/or
microphone.
7. Proceed with test (refer to 6.7 for further details).
5.3 SPEECH TESTING
This section gives a short description of how to operate the MIDIMATE 622
Diagnostic Audiometer for speech tests.
Either live voice or prerecorded speech from a tape recorder or CD player
may be employed for speech audiometry using one or both channels. Live Voice or
Tape/CD Input
The audiometer has connections for both microphone or tape/CD enabling
you to read out loud or play back word lists for threshold and discrimination
determination. Word Lists
Live voice investigations should only be carried out with the patient in a
sound cabin since the patient must not hear the Audiologist's voice directly. Sound Cabin
Required
For a more comprehensive treatment of this subject, please refer to 7.
SPEECH AUDIOMETRY.
NOTE : Selecting Speech automatically puts the Tone Switch in Reverse
mode (Interrupter).
Interrupter Mode
5.3.1 INTRODUCTION TO SPEECH AUDIOMETRY
A great many combinations of test parameters are available in speech
audiometry as the following outputs are available:
(Speech) Output ? :
Air Bone F.F.
and the following inputs:
(Speech, Bone) Input ?:
Tape (CD) Micr.
and the possibility of either ipsilateral or contralateral masking with White
Noise, Speech Noise or external noise. If Bone or F.F. is selected, then
masking via insert phone is also available.
MIDIMATE 622 OPERATION MANUAL 5. Operating in Test Mode
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