Microprocessor based voice recognition system realization

Abstract

Voice recognition systems, which today is one of gradually started to gain importance. In this study, using a PIC18F452 microcontroller, two registered words, compared with a voice command input. Registered with the sound of the word overlap as a result of the exit sign is active. Recognition of the audio signals zero crossing for the count and time was examined. In general, the voice recognition process, sound recording and determination of the expression; processing of sound, making comparison and integration of rest; finally, the expression was created with the realization of the corresponding functions. Developed in this system, without sounds recording of audio signal processing are performed simultaneously. In this system, not a waste of time for this situation may be many advantages to the system. Work is relatively simple and economically cheap.