access icon openaccess Understanding perception of active noise control system through multichannel EEG analysis

In this Letter, a method is proposed to investigate the effect of noise with and without active noise control (ANC) on multichannel electroencephalogram (EEG) signal. The multichannel EEG signal is recorded during different listening conditions such as silent, music, noise, ANC with background noise and ANC with both background noise and music. The multiscale analysis of EEG signal of each channel is performed using the discrete wavelet transform. The multivariate multiscale matrices are formulated based on the sub-band signals of each EEG channel. The singular value decomposition is applied to the multivariate matrices of multichannel EEG at significant scales. The singular value features at significant scales and the extreme learning machine classifier with three different activation functions are used for classification of multichannel EEG signal. The experimental results demonstrate that, for ANC with noise and ANC with noise and music classes, the proposed method has sensitivity values of 75.831% () and 99.31% (), respectively. The method has an accuracy value of 83.22% for the classification of EEG signal with music and ANC with music as stimuli. The important finding of this study is that by the introduction of ANC, music can be better perceived by the human brain.

Inspec keywords: signal classification; active noise control; medical signal processing; electroencephalography; discrete wavelet transforms; singular value decomposition

Other keywords: singular value decomposition; active noise control system; singular value features; activation functions; extreme learning machine classifier; music; electroencephalogram; discrete wavelet transform; human brain; multiscale analysis; silent listening condition; multivariate multiscale matrices; sub-band signals; multichannel EEG analysis; ANC; background noise; multivariate matrices

Subjects: Algebra; Algebra, set theory, and graph theory; Electrical activity in neurophysiological processes; Function theory, analysis; Bioelectric signals; Biology and medical computing; Electrodiagnostics and other electrical measurement techniques; Acoustic noise, its effects and control; Digital signal processing; Integral transforms; Algebra; Integral transforms; Signal processing and detection

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