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Enhancing VoIP speech quality using combined playout control and signal reconstruction

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2 Author(s)
Hyoung-Gook Kim ; Wireless Commun. Eng. Dept., Kwangwoon Univ., Seoul, South Korea ; Jin-Ho Lee

The quality of real-time Voice over Internet Protocol (VoIP) networks is affected by network impairments such as delays, jitters, and packet loss. To solve this issue, this paper proposes a new receiver-based enhancing method of VoIP speech quality. Our approach is based on the combined playout control and signal reconstruction technique that consists of a set of algorithms that conceal packet loss, reduce buffering delay, detect spike delay, and alleviate packet delay jitter. The proposed fully receiver-based enhancing algorithm is computationally efficient, delivers high-quality voice service, and is suitable for use in any practical mobile VoIP system.

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Consumer Electronics, IEEE Transactions on  (Volume:58 ,  Issue: 2 )