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Help CenterCheap Hearing Test Deaf Equipment AD105 Sonometer for Hearing Tests
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Specifications
1.Hearing test,air conduction test2.Both sides independent sound track
3.Provide continuant,pulse voice and warble ton
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Hearing deaf test
Channel:Two independent signal channel and masking channel
Frequency: Air conduction and free sound field 125-8000Hz; (Bone conduction 250-6000Hz)
Masking: Pure tone test, white noise
Normal: Press INT to start sound stimulate
Inversion: Press INT to stop sound stimulate.5dB step and 5dB step continuous attenuation,1DB error.
Distortion: Air conduction: <2.5%; Bone conduction: <5%
Preheating time: Less than 10 minutes
Standard accessory: TDH39 Air conduction earphone, responder, power line
Sound pressure range
HZ |
AC |
BC |
125 |
-10~90 |
|
250 |
-10~100 |
-10~45 |
500 |
-10~120 |
-10~60 |
750 |
-10~120 |
-10~60 |
1000 |
-10~120 |
-10~70 |
1500 |
-10~120 |
-10~70 |
2000 |
-10~120 |
-10~70 |
3000 |
-10~120 |
-10~70 |
4000 |
-10~120 |
-10~60 |
6000 |
-10~110 |
-10~50 |
8000 |
-10~110 |
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