Imdct Optimization Of Avs-P3 Decoding Algorithm In Dsp
2013 IEEE INTERNATIONAL CONFERENCE ON INFORMATION AND AUTOMATION (ICIA)(2013)
摘要
In order to write AVS-P3 audio decoding algorithms in the digital signal processor(DSP) chip which supports fixed-point algorithms, AVS-P3 audio decoding floating-point algorithms need to be converted to fixed-point algorithms. Owing to the high complexity of IMDCT(Inverse Modified Discrete Cosine Transform) module windowing in AVS-P3 decoder algorithm, we propose an improved windowing algorithm in this paper. The test results show that the time complexity of the module optimized is reduced by 17.04% and the space complexity of the module optimized is reduced by 32.9%. The proposed algorithm is better than the original algorithm in time and space performance.
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关键词
AVS-P3, Audio Decoding, DSP, IMDCT
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