Title :
A memory and computation efficient structure for MPEG polyphase synthesis
Author :
Mansour, Mohamed F.
Author_Institution :
DSP Solutions R&D Center, Texas Instrum. Inc., Dallas, TX, USA
Abstract :
We propose a new structure for polyphase synthesis in the MPEG-1 audio standard. The algorithm is based on factorizing the DCT matrix in a way similar to FFT factorization. The proposed algorithm reduces the memory requirement significantly even with direct implementation. With optimized implementation, the computational requirement can be reduced considerably as well.
Keywords :
audio coding; computational complexity; decoding; discrete cosine transforms; matrix decomposition; transform coding; DCT matrix factorization; FFT factorization; MPEG polyphase synthesis; MPEG-1 audio standard; audio decoder; computational requirement reduction; memory requirement reduction; Computational efficiency; Filters; Interleaved codes; Phase change materials; Prototypes;
Conference_Titel :
Acoustics, Speech, and Signal Processing, 2004. Proceedings. (ICASSP '04). IEEE International Conference on
Print_ISBN :
0-7803-8484-9
DOI :
10.1109/ICASSP.2004.1327093
