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Annoyance effects of noise are minimally affected by demographics, but fear of the noise source and sensitivity to noise both strongly affect the 'annoyance' of a noise. [42] Sound levels as low as 40 dB(A) can generate noise complaints [ 43 ] and the lower threshold for noise producing sleep disturbance is 45 dB(A) or lower.
A systematic-review conducted by the American Academy of Audiology Task Force On the Health-Related Quality of Life Benefits of Amplification in Adults found the use of hearing aids to increase quality of life. The review pertained to adults who experienced sensorineural hearing loss, which can be caused by excessive, loud noise. [140]
As blood temperature rises, TTS increases when paired with high-frequency noise exposure. [12] It is hypothesized that hair cells for high-frequency transduction require a greater oxygen supply than others, and the two simultaneous metabolic processes can deplete any oxygen reserves of the cochlea. [ 27 ]
Researchers at NIOSH tried to develop methods for predicting noise attenuation in workers in the early 1970s. [52] This attempt was made just before the first measurements of noise attenuation in factories, among workers. The work was carried out under the following conditions Low frequency noise is attenuated worse than mid- and high-frequency ...
Feedback, a squealing/whistling caused by sound (particularly high frequency sound) leaking and being amplified again, may be a problem for severe hearing losses. [17] Some modern circuits are able to provide feedback regulation or cancellation to assist with this. Venting may also cause feedback.
We've begun to accept the fact that we're destined to a life filled with tangled wires and missing earpieces.
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