Audio agc allows different speakers to be heard clearly from different directions . supports h . 264 , maximum data rate : up to 2m provides standard 3 . 5mm earphone and mic port 支持itu国际标准h . 264视频编解码算法，最高可达到2m带宽，实现在低速率带宽下达到更加清晰画面质量
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 同时研究了mpeg - 4视频编解码算法,将基于mpeg - 4的视频解码器移植到blackfin处理器上并进行了大量的优化工作。
The system test indicate the performance of mpeg2 ' s coding and decoding system had been improve 484 % after being optimized . the ability of video handling had been improved 系统测试表明，经过优化后的mpeg2编码解码算法的实现，系统整体性能提高了484 ，改善了对视频流的处理能力。
We discussed that how to optimize the jpeg decoding algorithm in the embed system development environment and how to utilize the given hardware resources extremely 文中描述了fujitsufr1000vdk的软硬件开发环境;在该嵌入式开发环境中如何优化jpeg解码算法,从而最大限度的利用已有的硬件资源。
The system is composed with six sections which are entropy decoder , inverse z transform , inverse quantization , inverse discrete cosine transform ( idct ) , up sampling and color space transform Jpeg解码算法主要由熵解码、逆z变换、反量化、反离散余弦变换、内插和色度空间转换六部分组成。
On the basis of the performance testing of our real - time codec is optimum algorithm introduced into pre - processing of the speech encoder of tetra . it can advance the veracity of pitch detection 在对实现的tetra语音编解码算法进行性能测试、分析的基础上，文章提出了在tetra语音编码的预处理部分采用优化算法。
Amr speech coder is a new speech coder recommendation produced by 3 gpp using on the 3rd generation mobile communication system w - cdma . this paper mainly deal with the algorithms of amr speech coder Amr语音编解码标准是3gpp提出的第三代移动通信系统w - cdma的语音编解码标准。本文主要对amr语音编解码算法进行了分析和研究。
With the rapid development of dsp technology , it has become a powerful tool in the wideband speech signal processing , which makes it possible to implement the complex algorithms for wideband speech in real time Dsp技术的高速发展为宽带语音信号处理提供了强有力的工具,使得较为复杂的宽带语音编解码算法的实时实现成为可能。
Second , the international standards for video coding are briefly described including h . 26x and mpeg . particularly , the encoding and decoding algorithm and bitstream syntax of h . 263 are introduced in detail 第二：总结了针对不同应用而制定的视频编码国际标准包括h . 26x和mpeg系列，较详细的介绍了h . 263编解码算法和码流语法结构。
Therefore the research of very low bitrate image coding has great significance . the author takes part in the research of the codec of isdn videophone in shanghai bell company and discusses the image coding algorithms in detail 作者参与了上海贝尔videophone项目组的isdn可视电话中的编码器的研究，主要对其中的视频编解码算法作重点研究和探讨。
