A voice recognizing elevator system

Abstract

The paper proposes a voice controlled, simulated elevator system for the benefit of differently abled persons, such as those who are visually impaired or are paraplegics. The proposed approach for an eight floor elevator system uses a speaker independent automatic speech recognition system to recognize spoken words which includes the floor numbers, directions and door commands. Sphinx4 is used for this purpose. To handle emergencies, the recognition of ten digit cellular phone numbers is incorporated with a text to speech system that gives voice feedback for verification before the telephone call is placed. The mean recognition accuracy for floor numbers is 97%, while it is 90% for directions and door operations.