Vocoder (LPC) Analysis by Variation of Input Parameters and Signals
Gupta Rajani, K Mehta Alok, Tiwari Vebhav · 2012
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 ® .