Comparação entre tom puro e tom modulado warble na obtenção do ganho funcional

Abstract

The functional gain is used in the validation of the process adaptation of hearing aids. This research presented as main aim to perform a study comparing the use of pure tone with the warble tone of the functional gain in users of hearing aid. To participate of the research the patients they would have to take care with some criterious: present bilateral sensorineural hearing loss, timpanometry curve type A (Jerger), use binaural hearing aids digital, with two canals, to be in process adaptation and present cognitive ability to understand the test instructions. The sample studied was made with 16 patients between 62 and 90 years old. These people signed the free permission term, answered the interview and they were submitted to tests in free field. After the selection of the patients was realized hearing evaluation with and without hearing aid in free field, using the frequencies 500, 1000, 2000, 3000 and 4000 Hz. On the basis of the results, had been established the values of reference for the functional gain of hearing aid, with the different used tones. The results found through the analysis statistics using the test Mann-Whitney had shown that statistically significant difference was found between the mean of gain with pure tone and with tone warble for all the analyzed frequencies. After the realization this study it was, concluded that, the use of the tone warble, in the functional gain, to present accurater results when comparative to the use of the pure tone in the frequencies of 2000, 3000 and 4000 Hz