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A Wide Band Speech Coding Technique using Low Delay Code Excited Linear Predictive Algorithm (LD-CELP)

Joshi Swati, Purohit Hemant

Annals of Computer Science and Information Systems

2017

Vol. 10

45--48

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.