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Speech Coding Techniques in Mobile Communication Systems

BROWSE_DETAIL_CREATION_DATE: 14-03-2017

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BROWSE_DETAIL_TYPE: Thesis

BROWSE_DETAIL_SUB_TYPE: Masters

BROWSE_DETAIL_PUBLISH_STATE: Unpublished

BROWSE_DETAIL_FORMAT: PDF Document

BROWSE_DETAIL_LANG: English

BROWSE_DETAIL_SUBJECTS: TECHNOLOGY, Electrical engineering. Electronics. Nuclear engineering,

BROWSE_DETAIL_CREATORS: Ajouat, Saleh Abulgasem Khalifa (Author),

BROWSE_DETAIL_CONTRIBUTERS: Uslu, Baran (Advisor),

BROWSE_DETAIL_TAB_KEYWORDS

Speech compression, speech coding, LPC, AbS, CELP, mobile communication, MOS


BROWSE_DETAIL_TAB_ABSTRACT

This thesis compares the speech quality, bit-rates and complexity for basic Linear Prediction Coding (LPC-10), Code Excited Linear Prediction (CELP, Federal Standard 1016) speech coder, and Analysis by Synthesis (AbS) method. The speech qualities of these three speech coding techniques are compared by performing subjective listening tests namely MOS (Mean Opinion Score) tests. All the simulations are implemented in Matlab. The test signals used are pure signals (i.e. there is no intentional noise creation). Results indicate that for speech quality of all tested signals the CELP standard performs the best among the other used methods. While for bit-rate and processing time (complexity) the LPC-10 coder gives the best result.


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