Resumen

COSTA, Maristela Julio; DANIEL, Raquel Cristina  y  SANTOS, Sinéia Neujahr dos. Sentence recognition in quiet and in noise on earphones: reference benchmarks. Rev. CEFAC [online]. 2011, vol.13, n.4, pp. 685-691.  Epub 29-Oct-2010. ISSN 1982-0216.  http://dx.doi.org/10.1590/S1516-18462010005000114.

PURPOSE: to determine the thresholds for sentence recognition in quiet (SRTQ) and in noise (SRTN) in order to estimate the benchmarks for young normal hearing adults. METHODS: the study included 240 individuals of both genders, aged between 18 and 30 year old with at least with high school education. Measurements were obtained using the Portuguese Sentence List test (COSTA, 1998), in earphones. In order to obtain the SRTN, a fixed noise - 65 dB was used ipsilaterally and the results were expressed through the signal/noise ratio. RESULTS: based on the values found from the evaluation of 480 ears, SRTQ average was 6.20 dB NA, with minimum and maximum values of 2.44 dB NA and 9.66 dB NA, respectively. The average standard deviation was 1.33; while the average signal/noise ratio was -5.29 dB, with minimum and maximum values of -2.55 dB and -9.22 dB, and average standard deviation 1.13. CONCLUSION: the average SRTQ, 6.20 dB NA, was compatible with the pure tone threshold average, 7.22 dB NA at frequencies of 0.5, 1 and 2 kHz. The average SRTN -5.29 dB can be used as a benchmark to evaluate the performance of individuals with and without hearing loss. The SRTN obtained in signal/noise ratios of -3.03 to -7.55 dB may indicate good performance as for speech recognition in noise.

Palabras llave : Audiology; Speech Discrimination Tests; Auditory Perception.