A Novel Approach on Converting Eye Blink Signals in EEG to Speech with Cross Correlation Technique

Abstract

Today, there are many patients with Amyotrophic Lateral Sclerosis or paralysis who are unable to perform any body movements other than eye movements. A system has been developed to facilitate communication between patients and their surroundings. This system utilizes binary coded expressions obtained through single and double eye blinks performed by the patients, which are then vocalized. The locations of the eye blinks are determined by analyzing the signals obtained from the patient using a wireless NeuroSky MindWave single-channel EEG device. The windowing process is performed at predetermined intervals to determine whether the blink within these windows was a single or double blink, by using the Cross Correlation method. The system is completed by converting the expressions corresponding to the binary codes to speech and has provided results with a very high degree of accuracy.