OBJECTIVES Most workers in auto part factories in Thailand are usually exposed to excessive noise in their workplace. This study aimed to assess the level of occupational noise-induced hearing loss and investigate risk factors causing hearing loss in auto part factory workers in the welding units in Thailand. METHODS This was a cross-sectional study. One hundred eighty subjects were recruited...

The continuous exposure to the relatively high level of noise in the surroundings of an airport is likely to affect the central pathway of the auditory system as well as the cognitive functions of the people working in that environment. The Brainstem Auditory Evoked Responses (BAER), Mid Latency Response (MLR) and P300 response of the ground crew employees working in Mumbai airport were studied...

Pure-tone air-conduction audiometry has become the foundation of hearing assessment. The audiometer, and in particular the earphones used with it, need to be calibrated to ensure measurement traceability. Hearing threshold measurements are then referred to established reference levels to then judge if any hearing loss is present. Ear simulators are used in this process to provide an objective m...

BACKGROUND Accurate prescriptive gain results in a more accurate fit, lower return rate in hearing aids, and increased patient satisfaction. In situ threshold measurements can be used to determine required gain. The Widex Corporation uses an in situ threshold measurement strategy, called the Sensogram. Real-ear measurements determine if prescriptive gain targets have been achieved. Starkey Labo...

OBJECTIVES The aims of the study were to describe the noise levels at an open cast chromite mine in Odisha, India, and the hearing threshold of its workers and to associate their hearing loss with their age, work station and length of employment at the mine. METHODS We performed a cross-sectional study of the hearing threshold of chromite mine workers. Audiometric data from 500 subjects was c...

This paper describes the relation between the region defined by the first and second formant frequencies and those peak levels in order to design a compression type of hearing aid. The experiments are conducted with the normal hearing subjects whose hearing areas are restricted by increasing HTL with masking noise. We present the synthetic speech signal with two resonant components to examine h...

INTRODUCTION Extended exposure to high-speed handpieces and other noise-intensive devices might put dentists at risk for possible hearing impairment. The aim of this study was to determine the hearing ability of dentists and other scientists for comparison. METHODS After approval by the ethics committee, 115 subjects (dentists and other academic professionals as controls) of both genders were...

Prevention and rehabilitation of hearing loss and tinnitus, the two most commonly awarded service-connected disabilities, are high priority initiatives in the Department of Veterans Affairs (VA). At least 4,000 Veterans, most with significant hearing loss, will receive cisplatin this year, with more than half sustaining permanent hearing shift and nearly 40% developing new tinnitus. With improv...

Some authors have reported that significant pressure changes occured in middle ear clefts when nitrous oxide (N2O) is inhaled during general anesthesia . In 18 adult patients without ear diseases who underwent non-otological surgery , middle ear pressure measurements were made with impedance audiometer (Teledyne TA-2C) just before and during N2O anesthesia. The results obtained were as follows:...

OBJECTIVE To investigate the validity of diagnostic pure-tone audiometry in a natural environment using a computer-operated audiometer with insert earphones covered by circumaural earcups incorporating real-time monitoring of environmental noise. DESIGN A within-subject repeated measures design was employed to compare air (250 to 8000 Hz) and bone (250 to 4000 Hz) conduction pure-tone thresho...