Centralized Speech Enhancement for Audio Conferencing

Abstract

Analysis of a Speech signal is one of the important areas of research in multimedia application. One of the main interests behind analyzing the speech signal is quality. Quality of a Speech signal and its intelligibility degrade when noise mixed with speech and it becomes more difficult to extract the desired information contained in the signal. When we talk about enhancement in the Speech signal, Reduction or removal of unwanted noise is very important from the speech signal in order to get the desired information contained in Speech signal. This project proposes an algorithm for removing the noise effect from Speech signal. In order to validate our approach for noise suppression, we have first implemented it on MATLAB then on C language for Real time operating system (RTOS).We investigated the noise suppression algorithm on Human voice and compared the results with noisy Speech signal. The proposed result shows that this approach makes efficient use of VoIP with speech enhancement for Audio conferencing. Voice over internet protocol (VoIP) relates with the transmission of a data like voice over network. This application is cost effective for communication with the help of the existing network. VoIP is a modern technology by which user can easily communicate with any one regardless of distance. VoIP application can run through any local or shared network. Traditional telephone uses public switched telephone network. But VoIP application use the channels over internet by getting the digitized input data, and form those data packets, then transmit these packets over internet channels. VoIP application is trending now a days because it is cost saving application and is the reason behind its popularity. VoIP gives many options for the communication on existing network which traditional phones do not. In this project, we develop VoIP proprietary protocol for Ubuntu operating system