People suffer from different brain disorders, unable to speak though they can think. For them require, a system which easily wearable and converts their imagined or intended covert speech into overt speech. Each brain activity generates an electrical and magnetic signal. The electrical signal due to the brain activity is called the EEG, and the magnetic movement is called the MEG. Both signals are mapped on the scalp, but it is weaker than the brain cortex, and the effect of volume conduction. Therefore, it is essential to map the scalp's exact location of imagined speech to reduce the required number of electrodes and complexity. In this explorer, self-made graphene- based electrode and Hall-effect principle-based optically pumped magnetic electrode Results are adequate to locate the area on the scalp of imagined speech and increase the system wearables and user comfortability than the preceding system.

EEG; MEG; Imagined Speech; Hall Effect sensor; Power Spectral Density