Bilateral Waveform Similarity Overlap-and-Add Based Packet Loss Concealment for Voice over IP
نویسندگان
چکیده
منابع مشابه
Bilateral Waveform Similarity Overlap-and-Add Based Packet Loss Concealment for Voice over IP
This paper invested a bilateral waveform similarity overlap-and-add algorithm for voice packet lost. Since Packet lost will cause the semantic misunderstanding, it has become one of the most essential problems in speech communication. This investment is based on waveform similarity measure using overlap-and-Add algorithm and provides the bilateral information to enhance the speech signal recons...
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This paper describes an outline of a project for developing a VoIP codec that can be used under a very severe communication environment where half of the packets drop. The codec is based on G.729 CS-ACELP, and a packet loss concealment (PLC) methods with redundant information will be used for enhancing speech quality. First, we assessed the importance of G.729 parameters, where we found that pa...
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The quality of service limitation of today’s Internet is a major challenge for real-time voice communications. Excessive delay, packet loss, and high delay jitter all impair the communication quality. A new receiver-based playout scheduling scheme is proposed to improve the tradeoff between buffering delay and late loss for real-time voice communication over IP networks. In this scheme the netw...
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A synchronization criterion for overlap-add time-scale modification is derived through a least squares estimation of the modified short-time Fourier transform. Based on this finding, a structural time-domain framework for time-scale modification is described. One efficient variant, which was called the Waveform Similarity based Overlap-Add (WSOLA) method, produces high quality output when appli...
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In recent years, voice over IP has become an attractive alternative to conventional public telephony. However, the Internet is a best-effort network, with no guarantee on its quality of service. A fundamental issue in real-time interactive voice transmissions over an unreliable Internet protocol network is packet loss. This problem is especially serious in transmitting low-bit-rate coded speech...
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ژورنال
عنوان ژورنال: Journal of Applied Research and Technology
سال: 2013
ISSN: 1665-6423
DOI: 10.1016/s1665-6423(13)71563-3