Efficient architectures of MDCT/IMDCT implementation for MPEG audio codec

@article{Li2009EfficientAO,
  title={Efficient architectures of MDCT/IMDCT implementation for MPEG audio codec},
  author={Lin Li and Huifang Miao and XiaoChao Li and Donghui Guo},
  journal={2009 3rd International Conference on Anti-counterfeiting, Security, and Identification in Communication},
  year={2009},
  pages={156-159}
}
Efficient architectures for realizing MDCT/IMDCT are presented. Based on the symmetry property of trigonometric functions, N-point MDCT formula will be transferred into an odd-even index paralleling process which can be achieved by two different types of decomposition, recursive formed DCT-II kernel or FFT-based DCT-IV kernel. Then a butterfly unit is… CONTINUE READING