A Wide Band Speech Coding Technique using Low Delay Code Excited Linear Predictive Algorithm (LD-CELP)
Swati Joshi, Hemant Purohit · Annals of Computer Science and Information Systems · 2017
A fair level of speech quality is desired in speech transmission for mobile voice services.The effective utilization of bandwidth and higher bit rate is must for a best quality speech coder.But at a time the both requirements are not fulfilled in desired format.The research is ongoing in the area of designing speech coder's.In general the CELP is an algorithm to design a good quality speech coder.From 80's to present the advancement in this technique is going on.In this paper a wide band speech coding technique is proposed using LD-CELP algorithm.The overall performance of LD-CELP (16Kbps) is summarized and computed on MATLAB version R2016a with parameters MSE and SNR.In conclusion we observe that SNR for LD-CELP is not much better and enhancement in this is necessary.