2024 Tus sau: Michael Samuels | [email protected]. Kawg hloov kho: 2023-12-16 01:44
A Txheem Threshold Shift , lossis STS, tau hais tseg hauv kev ua haujlwm nrov nrov txheem ntawm 29 CFR 1910.95(g)(10)(i) raws li kev hloov hauv lub rooj sib hais qhov pib , txheeb ze rau lub hauv paus audiogram rau tus neeg ua haujlwm ntawd, ntawm nruab nrab ntawm 10 decibels (dB) lossis ntau dua ntawm 2000, 3000, thiab 4000 hertz (Hz) hauv ib lossis ob lub pob ntseg.
Yog li ntawd, dab tsi yog qhov tseem ceeb ntawm kev hloov pauv?
OSHA suab nrov txheem txhais STS li qhov nruab nrab 10dB lossis ntau dua qhov poob hauv ib lossis ob lub pob ntseg txheeb ze rau qhov ntsuas tam sim no tshaj plaws hauv nruab nrab ntawm 2000, 3000 thiab 4000 Hz.
Tsis tas li ntawd, qhov hloov pauv mus tas li yog dab tsi? A hloov chaw pib mus tas li yog a hloov mus tas li nyob rau hauv lub auditory qhov pib . Tej zaum nws yuav tshwm sim tam sim ntawd los yog loj hlob zuj zus raws sij hawm. A hloov chaw pib mus tas li tau nyob rau hauv ruaj khov tsis hnov lus.
Tom qab ntawd, koj yuav ua li cas xam tus qauv pib hloov?
A pib ua haujlwm ntawm 20 dB muaj nyob ntawm 4000 Hz nruab nrab ntawm lub suab ntsuas thaum hnub nyoog 27 thiab 32. (The pib ua haujlwm yog xam los ntawm kev rho tawm lub rooj sib hais qhov pib thaum muaj hnub nyoog 27 xyoo, uas yog 5, los ntawm lub rooj sib hais qhov pib thaum muaj hnub nyoog 32, uas yog 25). Ib daim ntawv kuaj dua tau lees paub qhov no ua haujlwm.
Kev hloov pauv ib ntus ntev npaum li cas?
Qhov no yuav yog qhov cim ceeb toom tias koj lub rooj sib hais yuav raug teeb meem suab nrov. Ib ntus hnov threshold hloov yuav kav rau ob peb feeb mus txog ntau teev nyob ntawm theem thiab lub sijhawm ntawm lub suab nrov tau ntsib.
Pom zoo:
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