论文部分内容阅读
改进型的离散余弦变换 ( Modified discrete cosine transform)作为良好的时频分析工具在音频编码中广泛应用。本文提出了一种基于快速 DCT变换的 MDCT快速算法 ,与其他文献的算法相比 ,其运算量明显减少。
Improved discrete cosine transform (Modified discrete cosine transform) as a good time-frequency analysis tools widely used in audio coding. In this paper, a fast MDCT fast algorithm based on fast DCT transform is proposed. Compared with other algorithms, the computational complexity is significantly reduced.