Detection of normal and epileptic EEG signals using by lifting based HAAR wavelet transform and artificial neural network

Author(s):  
Vani S ◽  
ChandraSekhar P ◽  
Ramanarayan Sankriti ◽  
Aparna G
2019 ◽  
Vol 9 (6) ◽  
pp. 1301-1306 ◽  
Author(s):  
S. Vani ◽  
G. R. Suresh ◽  
T. Balakumaran ◽  
Cross T. Ashawise

Electroencephalogram (EEG) measures electrical activity of the brain and proffers valuable insight of the brain dynamics. Accurate and careful analysis of EEG signal plays a prominent role in the diagnosis of brain diseases like epilepsy, brain tumor. EEG is the most significant method used for epilepsy monitoring, diagnosis and rehabilitation. A patient-specific seizure detection model has been developed using Haar wavelet and Artificial Neural Network. HAAR Wavelet decomposition of multi-channel EEG with five scales is made and three frequency bands of EEG selected for the consequent process. The conventional Haar wavelet transform (HWT) is replaced by a modified Haar wavelet transform whereas the number of multiplications and additions are reduced. The Haar wavelet reduces computational complexity from the existing Haar wavelet structure which consumes only 1–3 ms based on the decomposition level to detect epilepsy.


2020 ◽  
Vol 40 (2) ◽  
pp. 709-728 ◽  
Author(s):  
S. Thomas George ◽  
M.S.P. Subathra ◽  
N.J. Sairamya ◽  
L. Susmitha ◽  
M. Joel Premkumar

Author(s):  
M. Yasin Pir ◽  
Mohamad Idris Wani

Speech forms a significant means of communication and the variation in pitch of a speech signal of a gender is commonly used to classify gender as male or female. In this study, we propose a system for gender classification from speech by combining hybrid model of 1-D Stationary Wavelet Transform (SWT) and artificial neural network. Features such as power spectral density, frequency, and amplitude of human voice samples were used to classify the gender. We use Daubechies wavelet transform at different levels for decomposition and reconstruction of the signal. The reconstructed signal is fed to artificial neural network using feed forward network for classification of gender. This study uses 400 voice samples of both the genders from Michigan University database which has been sampled at 16000 Hz. The experimental results show that the proposed method has more than 94% classification efficiency for both training and testing datasets.


Sign in / Sign up

Export Citation Format

Share Document