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AVS-P3音频解码算法定点化中IMDCT模块的优化

IMDCT module optimization in AVS-P3 audio decoding algorithm fixed point
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摘要 为了将AVS-P3音频解码算法移植到支持定点算法的芯片中,需要将浮点算法转换为定点算法,针对AVS-P3解码器中IMDCT模块加窗算法复杂度较大的问题,在算法定点化的过程中提出一种改进的加窗优化算法,测试结果表明优化后该模块时间和空间复杂度明显下降. For AVS-P3 audio decoding algorithms writing to the chip which supports fixed-point algorithms, AVS-P3 audio decoding floating-point algorithms needed to be converted to fixed-point algorithms. Owing to the high complexity of IMDCT module windowing in AVS-P3 decoder algorithm, we proposed an improved windowing algorithm in this paper, the test results showed that the time and space complexity of the module optimized decreased.
出处 《湖北大学学报(自然科学版)》 CAS 2013年第2期223-227,共5页 Journal of Hubei University:Natural Science
基金 国家重大科技专项(2010ZX03004-003-03 2010ZX03004-001-03) 国家自然科学基金重点项目(61231015) 国家自然科学基金面上青年项目(61102127 61272278 61201340 61201169) 湖北省自然科学基金(2011CDB451 2010CDB08602) 武汉大学博士生自主科研项目(20082160101000050 20102110101000099)资助
关键词 AVS-P3 音频解码 算法定点化 IMDCT模块 AVS-P3 audio decoding algorithm sentinel IMDCT module
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