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2017•Annals of Computer Science and Information SystemsOpen access

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

Swati A. Joshi, Hemant Purohit

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Abstract

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.

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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.

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Available abstract

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.

Key concepts: Code-excited linear prediction, Computer science, Vector sum excited linear prediction, Linear predictive coding, Speech coding, Speech recognition, Harmonic Vector Excitation Coding, Linear prediction

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