Skip to main page content
U.S. flag

An official website of the United States government

Dot gov

The .gov means it’s official.
Federal government websites often end in .gov or .mil. Before sharing sensitive information, make sure you’re on a federal government site.

Https

The site is secure.
The https:// ensures that you are connecting to the official website and that any information you provide is encrypted and transmitted securely.

Access keys NCBI Homepage MyNCBI Homepage Main Content Main Navigation
. 2012 Jul-Aug;78(4):108-14.
doi: 10.1590/S1808-86942012000400020.

Study of the noise spectrum on high frequency thresholds in workers exposed to noise

[Article in English, Portuguese]
Aurea Oliveira Canha Ottoni  1 , Anadergh Barbosa-Branco, Marlene Escher Boger, Sérgio Luiz Garavelli
Affiliations

Study of the noise spectrum on high frequency thresholds in workers exposed to noise

[Article in English, Portuguese]
Aurea Oliveira Canha Ottoni et al. Braz J Otorhinolaryngol. 2012 Jul-Aug.

Abstract

Noise level can be quantified and qualified based on sound characteristics such as intensity, type of spectrum, duration and distribution of the noise exposure during one's working hours.

Objective: To assess noise spectrum and the audiometric configuration of workers.

Materials and methods: Contemporary cross-sectional cohort carried out in the Federal District - Brazil. We did an environmental analysis (spectral analysis) of the noise in companies from different industries, with audiological assessment of 347 workers.

Results: The spectral analysis revealed peaks at different frequencies for each industry investigated (8 kHz-metallurgical, 4 kHz-stone Works and 2 kHz-wood works). We noticed that the frequencies of 14 kHz and 16 kHz had significant differences between the various industries, with a greater prevalence of the metallurgical.

Conclusion: The use of noise pressure measuring device, coupled to a frequency analyzer and high frequency audiometric assessment yielded an early detection of hearing damage, helping better organize preventive measures.

PubMed Disclaimer

Similar articles

See all similar articles

Cited by

References

    1. Costa EA, Morata TC, Kitamura S. In: Patologia do trabalho. 2. Mendes R., editor. Atheneu; São Paulo: 2003. Patologia do ouvido relacionada com o trabalho; pp. 1253–1282.
    1. Araújo SA. Perda auditiva induzida pelo ruído em trabalhadores de metalúrgica. Rev Bras Otorrinolaringol. 2002;68(1):47–52.
    1. Saliba TM. Manual prático de avaliaçã o e controle do ruído: PPRA. 4. LTr; São Paulo: 2008.
    1. Farfán R, Corina, Leviante Y, Ringo, Silís F. Fresia. Audición de alta frecuencia em sujetos expuestos a ruídos. Rev Chil Tecnol Méd. 2005;25(1):1178–1186.
    1. El Dib RP, Silva EM, Morais JF, Trevisani VF. Prevalence of high frequency hearing loss consistent with noise exposure among people working with sound systems and general population in Brazil: a cross-sectional study. BMC Public Health. 2008;8:151. - PMC - PubMed

Publication types