Health technology Two universal newborn hearing screening programmes, one using automated auditory brainstem response (AABR) and the other transient evoked otoacoustic emissions (TEOAE), were examined. Detailed pass criteria were reported for both programmes. The main difference between the two screening approaches was that AABR was performed by neonatal nurses, while TEOAE was conducted by mas...

product (DP), distortion-product “audiogram” (DP-gram), distortion-product OAE (DPOAE), fine structure, fast Fourier transform (FFT), input/output (I/O), inverse FFT (IFFT), magnitude and phase, medial olivocochlear (MOC), otoacoustic emissions (OAE), outer hair cell (OHC), polar plot, reflection, signal-to-noise ratio (SNR), spontaneous OAE (SOAE), stimulus-frequency OAE (SFOAE), transient-evo...

OBJECTIVES To determine the output levels of a commercially available MPEG layer-3 (MP3) player and to evaluate changes in hearing after 1 hour of listening to the MP3 player. DESIGN First, A-weighted sound pressure levels (measured in decibels [dBA]) for 1 hour of pop-rock music on an MP3 player were measured on a head and torso simulator. Second, after participants listened to 1 hour of pop...

UNLABELLED This study aimed at describing and analyzing tympanometric results obtained with 226 Hz and 1000 Hz probe tones; checking for correlations between tympanometry, otoacoustic emissions and otoscopic examination; describing abnormal results found in the evaluation procedures. METHODS Double-blind and prospective study. Our sample included 70 babies, between 7 days and one month and 13...

Evoked otoacoustic emissions (EOAEs) are currently used as the most reliable test for hearing screening. The presence of emission is commonly detected by the visual inspection of the signals and the cross-correlation function between replicate responses recorded in the same conditions. Performances of these methods are greatly influenced by the residual noise level. Residual noise is often of l...