IIUM Repository

Speech coding for Bluetooth with CVSD algorithm

Khalifa, Othman Omran and Khan, Sheroz and Islam, Md. Rafiqul and Muktar, Mohd and Yaacob, Zahrein (2004) Speech coding for Bluetooth with CVSD algorithm. In: 2004 RF and Microwave Conference, 5 - 6 October 2004, Subang, Selangor.

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Speech coding is a procedure used to represent a digital speech signal by as minimum bits as possible, maintaining at the same time a reasonable level of speech quality. Due to increasing demand for speech communications, speech coding technology has received a lot o f researcher's interests. Speech coding is performed using numerous steps or operations specified as an algorithm. This paper presents the Continuously Variable Slope Delta (CVSD) speech coding method which is widely used in Bluetooth applications. It is a nonlinear sampled data feedback system which accepts a band limited analog signal and encodes it into binary form for transmission through a digital channel. At the receiver, the binary signal is decoded into a close approximation of original analog signal. This coding technique is implemented in Matlab Simulink and the simulation results shown coding has good noise immunity. Further, shown in this work is the fact that damaged packets are discarded straight away without having a serious impact on the speech quality making it more suitable for two way audio communications.

Item Type: Conference or Workshop Item (UNSPECIFIED)
Additional Information: 4119/5906
Subjects: T Technology > T Technology (General)
Kulliyyahs/Centres/Divisions/Institutes (Can select more than one option. Press CONTROL button): Kulliyyah of Engineering > Department of Electrical and Computer Engineering
Depositing User: Prof. Dr Othman O. Khalifa
Date Deposited: 03 Apr 2012 15:56
Last Modified: 20 Nov 2019 16:00
URI: http://irep.iium.edu.my/id/eprint/5906

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