| 多缓冲机制下ADPCM解码算法适应性研究 |
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| 引用本文： | 凌晨,韩江洪,马学森,毕翔. 多缓冲机制下ADPCM解码算法适应性研究[J]. 合肥工业大学学报(自然科学版), 2009, 32(8) |
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| 作者姓名： | 凌晨 韩江洪 马学森 毕翔 |
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| 作者单位： | 合肥工业大学,计算机与信息学院,安徽,合肥,230009;合肥工业大学,计算机与信息学院,安徽,合肥,230009;合肥工业大学,安全关键工业测控技术教育部工程研究中心,安徽,合肥,230009 |
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| 基金项目： | 高等学校博士学科点专项科研基金资助项目,广东省教育部产学研结合资助项目 |
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| 摘 要： | 文章对不同缓冲机制下ADPCM解码算法的运行条件进行了分析与对比,利用最小二乘法,提出关于ADPCM解码函数输入数据量与函数输入缓冲区长度的条件关系式,量化了不同缓冲机制对算法适应性的影响;针对实验环境的特点,改进了IMA ADPCM解码算法.研究结果表明,采用多缓冲机制能显著提高ADPCM算法的适应性;改进后的解码算法效率较原算法提高约75%.
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| 关 键 词： | 自适应差分脉冲调制 多缓冲机制 解码 |
Study of ADPCM decoder algorithm's adaptability based on multi-buffer mechanism |
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| LING Chen,HAN Jiang-hong,MA Xue-sen,BI Xiang. Study of ADPCM decoder algorithm's adaptability based on multi-buffer mechanism[J]. Journal of Hefei University of Technology(Natural Science), 2009, 32(8) |
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| Authors: | LING Chen HAN Jiang-hong MA Xue-sen BI Xiang |
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| Affiliation: | LING Chen1,HAN Jiang-hong1,2,MA Xue-sen1,BI Xiang1,2(1.School of Computer and Information,Hefei University of Technology,Hefei 230009,China,2.Engineering Research Center of Safety Critical Industrial Measurement and Control Technology of the Ministry of Education,China) |
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| Abstract: | In this paper,the operation conditions of the ADPCM decoder algorithm in different buffer mechanisms are analyzed and compared.The formulas of the input data length and the input buffer length of the ADPCM decoder are deduced with the least-squares method.The formulas are used to quantize the effects of different buffer mechanisms on the application of the ADPCM decoder algorithm.Then the improvement of the IMA ADPCM decoder algorithm is proposed according to the characteristics of SCM.Experiments show that... |
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| Keywords: | adaptive differential pulse code modulation multi-buffer mechanism decoding |
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