Percepção de fala dos deficientes auditivos usando aparelho de amplificação com algoritmo de redução de ruído

Abstract

Of ten, individuals with hearing loss have difficulties understanding speech in noisy environments. Aim: It was the aim of this study to assess the performance of adult individuals with sensorineural hearing loss, associated with speech perception using digital hearing aids with a sound reduction algorithm called Speech Sensitive Processing, on and off, in the presence of noise. Materials and Methods: This case study was performed with 32 individuals with sensorineural hearing loss of mild, moderate or mild to moderate level. Our evaluation involved a speech perception test, where we investigated the recognition of sentences in noise, in order to get a signal/noise ratio, with a digital hearing aid. Result Description: The algorithm provided a benefit for most hearing impaired individuals, in the investigation of signal/noise ratio and the results pointed to a statistically significant difference when the algorithm was on, compared to when the algorithm was off. Conclusion: The use of a sound reduction algorithm must be considered as a clinical alternative -since we observed an efficacy in noise reduction and heightened speech perception.

Desenvolvimento do teste Listas de Sentenças Dicóticas em Português Brasileiro

“…The Brazilian Portuguese Sentence List Test (SLP-BR) has been widely used in research and in clinical practice, with different assessment goals and in diverse populatio ns (14,15,16,17,18,19,20,21,22,23,24) . Thus, the objective of developing a dichotic version of SLP-BR was to create a material that enabled research on the ability of figure-ground discrimination for verbal stimuli, through the task of binaural integration and separation, using sentences that represent conditions of everyday communication (24) .…”

Percepção de fala: desempenho de indivíduos usuários de aparelho de amplificação sonora individual com microfone direcional

“…The results demonstrated a significant difference between the two situations, suggesting that the algorithm could provide a benefit to most individuals. These findings indicate the importance of technological advancement (1) .…”

“…Many studies have revealed that (1,13,14,18) , since the year 2000, there has been considerable research on this topic. The data of the past researched conducted are in agreement with the results obtained from the current research, thereby confirming that directionality favors speech recognition in noise situations (14,23,24) , and for moderate to severe hearing loss, the bilateral directional microphone offers greater benefit compared to the bilateral omnidirectional microphone.…”

“…Lesions of the auditory system affect many of these abilities, disrupting the processing of acoustic or speech signals (1,2) .…”

Direcionalidade e redução de ruído em AASI: percepção de fala e benefício

“…Studies developed with the aim of assessing noise reduction algorithms show conflicting results. Some authors find improvements in the clinical evaluation of speech in the presence of noise when noise reduction algorithms are used, [11][12][13]8 while others find improvements only on self-assessment questionnaires [14][15][16] . Another way to improve speech perception in the presence of noise is to use directional microphones, which have different sensitiveness according to the sound wave incidence angle.…”