Wednesday, May 26, 2010


How every thing comes down to signals in analog is so strange. All around is the world full of signals.. Sound waves, light waves etc. never imagined a world like this.

Do we really are there in this world or just signals combining together to make us in this format. As waves can pass trough our bodies so are we really opaque. hmmm so different and strange world around us or we are in.

STRANGE feeling

Friday, March 5, 2010

Friday, April 24, 2009

why use DCT

1. DCT coefficients are derived to be relatively uncorrelated and thus possible to create simple algorithms for it.
2. By DCT a signal can be decomposed to underlying spatial frequencies. This is very impotant for compression.