Denoising of ABR Signals using Wavelet Packets
نویسنده
چکیده
Auditory Brainstem Response (ABR) is an auditory evoked potential extracted from ongoing electrical activity in the brain. ABR is especially used for newbornand children hearing screening, auditory threshold estimation, and brainstem lesion detection in response to stimuli such as click sound, tone burst or chirp. In order to support clinical decision making the analysis of ABR signals must exhibit good resolution in both time domain and frequency domain. In this paper biorthogonal wavelet packets are applied for effective noise reduction and detection of ABR signals. Experimental results obtained of simulated data run on Matlab and real data demonstrate the superiority of wavelet packets for denoising and reconstructing ABR signals. Keywordsauditory brainstem response, biorthogoanl wavelet packets;denoising.
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