codec 中文意思是什麼

codec 解釋
編碼器譯碼器
  1. The hardware of the ip phone codec to be designed is based on the fixed point digital signal processor ( ti ' s tms320vc5410 ) while the compression and decompression core in the software of dsp is based on the itu - t vg. 729a. ip phone codec carryout the task of collecting / playing - back. coding / decoding of speech signal and communication with embedded cpu. etc

    該語音編解碼器的硬體基於tms320vc5410 ，編解碼演算法遵循itu - tg . 729a協議，能夠實現語音信號的採集/回放、編碼/解碼以及同嵌入式cpu通信等功能，在8kbit / s的碼率下能夠提供獲得良好的語音質量。
  2. Design and implementation of jpeg2000 hd video codec

    2000編解碼器的設計與實現
  3. When using a fixed quantizer / quality mode the codec goes into ' imbecile - mode ' and just plainly encodes everything using a very simple set of rules

    當使用一個固定的量化器/質量參數模式，編碼器將進入一種「低智商模式」 ，只是平坦的使用一個簡單規則進行編碼。
  4. In order to obtain a high - quality speech codec, the phase information of speech should be included in codec. in this thesis, a method for quantizing the phase of sew ( slowly evolving waveform ) and reconstructing sew ’ s phase with cubic polynomial interpolation is given based on the perceptual weighting analysis - by - synthesis ( a - b - s ) vector quantizer for the phase spectrum in wi coder

    本文基於感覺加權相位譜分析合成（ abs - analysis - by - synthesis ）矢量量化方法，給出了一種wi編碼器中慢漸變波形（ sew - slowlyevolvingwaveform ）的相位信息量化及合成端相位的三次多項式插值重建方法。
  5. The codec supports raster images bitmaps

    編碼解碼器支持光柵圖像（位圖） 。
  6. Proposing to adaptively encode run length with 3 symbol ' s arithmetic coding in term of it ' s binary form, which can be generalize any codec using run length. hereby, bdrl is realized to form embedded bitstream

    與一些流行的性能優秀的小波編碼器相比，對于文中的一些測試圖像，在各個比特率時mcgsd的效果都是最好的，峰值信噪比（ psnr ）值都是最高的。
  7. At the same time, the author studied the mpeg - 4 video codec algorithm, transplanted the mpeg - 4 video decoder to the blackfin processor and did lots of optimization work

    同時研究了mpeg - 4視頻編解碼演算法，將基於mpeg - 4的視頻解碼器移植到blackfin處理器上並進行了大量的優化工作。
  8. Has been officially released, ogg codec is upgraded

    正式發布，增加了ogg解碼器。
  9. The codec supports vector images metafiles

    編碼解碼器支持矢量圖像（圖元文件） 。
  10. Gets or sets the version number of the codec

    獲取或設置編碼解碼器的版本號。
  11. Radio interface enhanced full - rate voice codec

    無線電介面增強型全速率聲碼c
  12. A string that contains the name of the codec

    包含編碼解碼器名稱的字元串。
  13. Decoder the codec supports decoding reading

    編碼解碼器支持解碼（讀取） 。
  14. The implementation and optimization of h. 263 video codec based on tm

    1300上的實現與優化
  15. A implementation and design of low bit rate speech codec

    一種低碼率聲碼器系統的設計及實現
  16. Section ii describes the design approach and implementation of speech module on mcf5249 coldfire core. the speech codec optimizes g. 729a codes and added voice activity detection of g. 729b to save bandwidth ; the implementation of acoustic echo cancellation uses nlms algorithm and it can reduce echo though designing adaptive fir filter and speech detector ; the dtmf and cpt generate signal using two second order digital sinusoidal oscillators and detect signal by picking up the frequency information. but only get the frequency information is not enough in cpt detector, this thesis introduces a method

    其中對語音編解碼器的設計採用優化g . 729a代碼達到設計要求，並在此基礎上加入g . 729b的靜音檢測模塊，以進一步降低網路傳輸帶寬;對回聲消除器的設計採用nlms演算法，通過設計自適應fir濾波器和語音檢測器達到回聲消除目的;對雙音多頻設計，信號發生端採用構造靜態參數表並通過二階正弦振蕩器產生信號，信號檢測端提取頻率信息以檢測信號;對呼叫進程音設計，除了類似雙音多頻的信號發生及頻率檢測設計外，還需要檢測信號持續時間，作者設計了一種基於匹配狀態表的方法以檢測信號持續時間。
  17. It can perform both lossy and lossless compression, and progressive codec, by providing high compression rate and image reconstruction quality

    在研究嵌入式零樹小波編碼演算法及原理的基礎上，描述了演算法的應用過程，闡述了具體的實現思路。
  18. As the latest standard in video codec field, h. 264 has such advantage as high compression rate, strong erroe resilience capacity, highly adaptability and so on

    作為視頻編解碼領域的最新標準， h . 264具有壓縮率高、差錯恢復能力強、適用范圍廣等優點。
  19. Divx which is one of mpeg - 4 ' s codec is used as codec of this system

    本系統使用mpeg ? 4的divx編解碼器實現視頻的編碼及解碼。
  20. For video codec, after analyzing and researching the newest standard h. 264, an efficiency algorithm was proposed in this paper using self - feature, spatial correlation and temporal correlation to judge the encoding mode of one macro - block. through this method, the best prediction mode can be obtain before encoding, then, the coding time can be reduced dramatically with a little expense of bit - rate. for video transmission, in this paper, a transmit method was proposed using tcp / ip protocol under the environment of local networks

    首先，在分析及研究最新的視頻編碼標準h . 264的基礎上，利用宏塊自身的特點和其時間、空間的相關性來判斷宏塊應該採用的編碼模式，從而提前得到該宏塊的最佳編碼模式，新方法有效地克服了原標準演算法中窮舉式的復雜演算法，在壓縮碼流只有少許增加的情況下，大幅度地提高了幀內及幀間編碼的速度。
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