[Tremor] IMDCT

[Sachin Hambar]

Hi,
     I am currently porting the Vorbis Decode on Arm9 Processor. I am debugging the IMDCT code. But I am unable to understand the algorithm.
Is it FFT implementation? if not is there any document about the algorithm implemneted in tremor. I also gone through this document 
" The use of mul-tirate filter banks for coding of high quality digital          audio  [http://www.iocon.com/resource/docs/ps/eusipco_corrected.ps]"

by T. Sporer, K. Brandenburg and B. Edler. 

 But it is to mathematical. I am unable to understand the  signal flow diagram implemneted.



Sachin Hambar

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