Simulation of IN-CAR Voice Filtering Using MATLAB

Abstract

Nowadays, technology advanced rapidly in many approaches such as car environment. This project presents simulation of in-car voice module, which proposed to aim control the car using voice system. This module communicate with driver by human speech. It informs driver about the state of car equipment and recognizes driver voice commands. This feature makes it easy to control a lot of car equipmentby human voice and leads to deal with cars in the same way of dealing with humans in addition, it makes driving easy as talking and use voice conversation with cars.The proposed system canbe used also for speaker verification to protect car against stealing.The driving environment surrounded with a lot of noise that should overcome to get a perfect recognition of voice.This noise takes many representations differ with the situation of the traffic, for all this MATLAB software is used for signal processing using different techniques to enhance the speech signal by designing filters capable for suppressing noise as possible.This research give a background about the digital processing techniques used for voice enhancement such as frequency domain spectral analysis and different filtering approaches to make a decision about which one give the most proper results.