| 多工作模式MPEG音频解码器 |
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| 引用本文： | 朱子元,林涛. 多工作模式MPEG音频解码器[J]. 计算机工程, 2009, 35(24): 216-218 |
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| 作者姓名： | 朱子元 林涛 |
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| 作者单位： | 同济大学超大规模集成电路研究所,上海,200092 |
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| 摘 要： | 设计一个低功耗、可配置、低成本的MPEG-1/2 Layer I/II/III音频解码器。该解码器包含软件部分和硬件加速部分,可以选择工作在＂高品质＂和＂低功耗＂2种工作模式下。在＂高品质＂工作模式下,该解码器是全兼容的。在＂低功耗＂工作模式下,设计一个截止综合子带滤波和欠采样的方法,使得系统的动态功耗得到进一步降低。
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| 关 键 词： | MPEG音频 感知音频编码 低功耗 截止子带 |
| 修稿时间： | |
MPEG Audio Decoder with Multiple Work Mode |
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| ZHU Zi-yuan,LIN Tao. MPEG Audio Decoder with Multiple Work Mode[J]. Computer Engineering, 2009, 35(24): 216-218 |
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| Authors: | ZHU Zi-yuan LIN Tao |
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| Affiliation: | (Institute of Very Large Scale Integration, Tongji University, Shanghai 200092) |
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| Abstract: | This paper presents a low power, configurable and low cost MPEG-1/2 Layer I/II/III audio decoder. The decoder consists of a software core and a hardware core and has two operation modes, "high quality" mode and "power saving" mode. In the "high quality" mode, the decoder is a full compliance MPEG audio decoder. In the "power saving" mode, a cut-off sub-band synthesis filter and downsampling architecture is proposed. Using the new architecture, the power consumption of the decoder is decreased further more. |
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| Keywords: | MPEG audio perceptual audio coding low power cut-off sub-band |
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