International Science Community Association Research Journal of Engineering Sciences 2278 - 9472 1 1 2012 07 26 Vocoder (LPC) Analysis by Variation of Input Parameters and Signals 57 61 EN D.P Deshpande 1 Dept of Chemical Engineering, TKIET, Warananagar, MS, INDIA S.S. Haral 2 Dept. of Chemical Engineering, Govt. Polytechnic, Jalna, MS, INDIA S.S. Gandhi 3 Dept of Chemical Engineering, MIT, Alandi, Pune, MS, INDIA V.N. Ganvir 4 Dept, of Petrochemical Technology, LIT, Nagpur, MS, INDIA Vaibhav V. Prakash 1 Department of Computer Science and Engineering, Sri Jayachamarajendra College of Engineering, Mysore, INDIA Kutnikar Ajay L. 2 Department of Computer Science and Engineering, Sri Jayachamarajendra College of Engineering, Mysore, INDIA Tushar S. Patel 1 Computer Engineering Department, UVPCE, Kherva, Gujarat, INDIA Kiran R. Amin 2 Computer Engineering Department, UVPCE, Kherva, Gujarat, INDIA U.C. Roman 1 Sardar Vallabhai National Institute of Technology, Surat 395007, INDIA P.D. Porey 2 Sardar Vallabhai National Institute of Technology, Surat 395007, INDIA P.L. Patel 3 Sardar Vallabhai National Institute of Technology, Surat 395007, INDIA N. Vivekanandan 4 Central Water and Power Research Station, Pune 411024, INDIA Sanjay Purkar T. 1 Swami Vivekanand College of Engineering, Indore MP, INDIA Sunil Pathak 2 Swami Vivekanand College of Engineering, Indore MP, INDIA Sanjay Kumar Dubey 1 Dept. of Civil Engineering, Jabalpur Engineering College, Jabalpur INDIA Ahmad Khaleek 1 Structural Engineering, Jabalpur Engineering College, Jabalpur, MP, INDIA R.K. Yadav 2 Department of Civil Engineering, Jabalpur Engineering College, Jabalpur, MP, INDIA Rajeev Chandak 3 Department of Civil Engineering, Jabalpur Engineering College, Jabalpur, MP, INDIA M.P. Aina 1 Lab. des Sciences et Techniques de l’Eau de l’Ecole Polytechnique d’Abomey Calavi, UAC, Cotonou, BENIN and Lab. d’Etude et de Recherche en Chimie Appliquée, Ecole Polytech. d’Abomey/Calavi, UAC, Cotonou, BENIN B. Djihouessi 2 Lab. des Sciences et Techniques de l’Eau de l’Ecole Polytechnique d’Abomey Calavi, UAC, Cotonou, BENIN E.W. Vissin 3 Lab. Pierre Pagney, Climat, Eau, Environ., Dévelopement (LACEEDE) /DGAT/FLASH, Université d’Abomey-Calavi, BENIN N.M. Kpondjo 4 Lab. des Sciences et Techniques de l’Eau de l’Ecole Polytechnique d’Abomey Calavi, UAC, Cotonou, BENIN V. Gbèdo 5 Lab. des Sciences et Techniques de l’Eau de l’Ecole Polytechnique d’Abomey Calavi, UAC, Cotonou, BENIN K.C.D Sohounhloué 6 Lab. d’Etude et de Recherche en Chimie Appliquée, Ecole Polytech. d’Abomey/Calavi, UAC, Cotonou, BENIN Nitin Tiwari 1 Singhania University, Jhunjhunu, Rajasthan, INDIA Rajdeep Singh Solanki 2 Singhania University, Jhunjhunu, Rajasthan, INDIA Gajaraj Singh Pandya 3 Singhania University, Jhunjhunu, Rajasthan, INDIA Rajani Gupta 1 Truba College of Engineering and Technology Indore, INDIA Alok K. Mehta 2 Truba College of Engineering and Technology Indore, INDIA Vebhav Tiwari 3 Truba College of Engineering and Technology Indore, INDIA > Research Paper 2011 10 31 2012 07 26 In this paper we have performed analysis on the quality of processed signals by varying various parameters associated with the Linear Predictive Coder (LPC) vocoder, designed as a project. The aim of the project was to compress (encode) voice signals using a lossy compression technique called LPC and obtain a compression rate up to 95% to utilize channel bandwidth by using less resources. But while performing the analysis this time we have given priority to the quality compromising a little on the efficiency of the process. In this paper we analyze the effect of sampling rate, order of the vocoder and size of the frame on standard male and female voice signal patterns. The LPC vocoder is designed using MATLAB®. Copyright@ International Science Community Association