gms | German Medical Science

Objective: Different techniques are used to evaluate people’s hearing sensitivity. These techniques use methods based on auditory brainstem response (ABR), transient evoked otoacoustic emissions (TEOAE), etc. ABR signal is part of the auditory evoked potential (AEP) that occurs in the brain as a result of an auditory stimulus that excites the brain neurons to trigger the potential. The ABR test is a neurological test that is clinically used to evaluate hearing sensitivity of tested subjects. The analysis of ABR is by far one of the most reliable methods in diagnosing the hearing loss in newborn babies.

To determine a preferred wavelet transform (WT) procedure for multi-resolution analysis (MRA) of auditory evoked potentials (AEP).

Methods: A number of WT algorithms, mother wavelets, and pre-processing techniques were examined by way of critical theoretical discussion followed by experimental testing of key points using real and simulated auditory brain-stem response (ABR) waveforms. Conclusions from these examinations were then tested on a normative ABR dataset.

Conclusions: The study’s main focus is to implement a new method of filtering the ABR, so that less number of sweeps is required; therefore, less time is consumed for the ABR test. The study implements a Wavelet filter of the ABR signal, which is able to produce a meaningful readable ABR signal using 500 sweeps or less.

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