计算机工程
計算機工程
계산궤공정
COMPUTER ENGINEERING
2009年
24期
216-218
,共3页
MPEG音频%感知音频编码%低功耗%截止子带
MPEG音頻%感知音頻編碼%低功耗%截止子帶
MPEG음빈%감지음빈편마%저공모%절지자대
MPEG audio%perceptual audio coding%low power%cut-off sub-band
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.
設計一箇低功耗、可配置、低成本的MPEG-1/2 Layer I/II/III音頻解碼器.該解碼器包含軟件部分和硬件加速部分,可以選擇工作在"高品質"和"低功耗"2種工作模式下.在"高品質"工作模式下,該解碼器是全兼容的.在"低功耗"工作模式下,設計一箇截止綜閤子帶濾波和欠採樣的方法,使得繫統的動態功耗得到進一步降低.
설계일개저공모、가배치、저성본적MPEG-1/2 Layer I/II/III음빈해마기.해해마기포함연건부분화경건가속부분,가이선택공작재"고품질"화"저공모"2충공작모식하.재"고품질"공작모식하,해해마기시전겸용적.재"저공모"공작모식하,설계일개절지종합자대려파화흠채양적방법,사득계통적동태공모득도진일보강저.
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.
