| 多制式音频解码关键模块的FPGA设计与验证 |
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| 引用本文： | 周游,贺珊,李琳,郭东辉.多制式音频解码关键模块的FPGA设计与验证[J].中国科技论文在线,2014(7):798-802. |
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| 作者姓名： | 周游 贺珊 李琳 郭东辉 |
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| 作者单位： | 厦门大学信息科学与技术学院,福建厦门360015 |
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| 基金项目： | 国家自然科学基金资助项目（61274133）;高等学校博士学科点专项科研基金资助项目（20090121110019） |
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| 摘 要： | 在分析音频解码标准MP3和AAC及其实现方案基础上,提出了基于FPGA的支持多制式的音频解码算法设计方案。将分步查表法引入霍夫曼解码,并提出了无乘法器的反量化变换及可兼容的IMDCT变换算法的FPGA实现方案。板上测试验证表明,该方案可准确完成多制式音频的解码,并提高解码速度与精度。
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| 关 键 词： | 音频解码 FPGA设计 霍夫曼解码 反量化变换 IMDCT变换 |
Design and verification of FPGA-based key modules in multi-standard audio decoding |
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| ZhouYou,He Shan,Li Lin,Guo Donghui.Design and verification of FPGA-based key modules in multi-standard audio decoding[J].Sciencepaper Online,2014(7):798-802. |
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| Authors: | ZhouYou He Shan Li Lin Guo Donghui |
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| Institution: | (Department of Information Science and Technology, X iamen University, Xiamen , Fuj ian 361005, China) |
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| Abstract: | The audio encoding standards （MP3 and AAC）and their implementation schemes are analyzed.The FPGA design scheme is proposed to support the audio decoding algorithm with multi-standards.The substep lookup table algorithms introduced to implement Huffman decoding on hardware.A FPGA-based scheme,supporting multiplier-less inverse quantization and config-urable IMDCT,is proposed.The experiments on demo board show that proposed scheme finish the decoding tasks with higher speed and accuracy. |
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| Keywords: | audio decoding FPGA design Huffman decoding inverse quantization IMDCT |
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