AIMS To study the agreement between audiometric test results measured in non-soundproof environments at the worksite, and in a soundproof booth. METHODS In a cross sectional prevalence study on noise induced hearing loss, 885 transport workers whose hearing thresholds were measured by a standard audiometric test method in non-soundproof environments at the worksite were identified to have som...

  Abstract   Background : Noise is the most common hazard in the workplace and noise induced   hearing loss considered to be the most common occupational disease as well.   Cigarette smoking, in some studies, has been known to induce hearing loss. The purpose   of this study was to evaluate the effect of contemporary exposure to occupational   noise and cigarette smoking on hearing.   Methods :...

In this article, a new approach to tidal harmonic analysis is introduced. This approach incorporates more constituents in the least squares method for a fixed duration of noise-free tidal record and results in a more accurate tidal prediction. Moreover, it is demonstrated that 135 days of hourly data, which is significantly less than 369 days data in the Rayleigh criterion, is sufficient for th...