CODEC

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A Design of the Quantizer of H.261 CODEC
《The Journal of China Universities of Posts and Telecommunications》2003年第1期55-59,共5页HUANGTing-xue ZHUZhi-xiang DAIGuan-zhong 
This paper introduces two steps to design a quantizer of H. 261 CODEC: thefirst step is to implement the coarse quantizing through control algorithm for the buffer' soccupation ratio ; the second step is to finish the...
关键词：H.261 control algorithm for buffer' s occupation ratio control algorithm ofvisual characteristics H.261. 
A High-Performance Codec Suitable for the GSM Half-Rate Coding System
《The Journal of China Universities of Posts and Telecommunications》1999年第2期67-71,共5页ZHOU Yue-chen FENG Yu-wen(Department of Communication Engineering, Naming University of Posts and Telecommunications, Naming, 210003, P.R. China) 
In this paper we describe our research work in GSM half-rate coding system for the pan-Europeandigital mobile cellular radio system. The system consists of a speech coder and a channel coder. An overview of thespeech ...
关键词：CELP(code-excited linear predication) LSP parameters: channel coding 
Implementation of a LD-CELP Codec with Echo Canceller Functions
《The Journal of China Universities of Posts and Telecommunications》1995年第2期18-23,共6页TianWenshun NiWeizhen 等 
In this paper, the authors present a method to handle the Echo Canceller as an on-side job of LD-CELP codec and a circuitry to embed echo canceller into a LD-CELP codec. The Possibility to implement a system with t...
关键词：speech coding echo canceller signal processing 
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