Search All of the Math Forum:
Views expressed in these public forums are not endorsed by
Drexel University or The Math Forum.
|
|
|
|
Relation of Cosine
Posted:
Jul 22, 1996 5:38 AM
|
|
I'm designing a discrete cosine transform hardware for decoding MPEG
format. It need two-dimension IDCT. In order to reduce area of gate design
so I have to do a fast cosine transformation. Anyone has comment about it
or can suggest me about how to reduce instuction please write to me.
Now I want to know about relation of cos(1/16)PI , cos(2/16)PI ,...,
cos(7/16)PI in mathematical
cos(1/16) PI = sqrt(2+sqr(2+sqrt(2)))/2
cos(2/16) PI = sqrt(2+sqr))/2
cos(3/16) PI = sqrt(2+sqr(2-sqrt(2)))/2
cos(4/16) PI = sqrt(2)/2
cos(5/16) PI = sqrt(2-sqr(2-sqrt(2)))/2
cos(6/16) PI = sqrt(2-sqr))/2
cos(7/16) PI = sqrt(2-sqr(2+sqrt(2)))/2
--
Best Wishes,
=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=
N a v a p o r n W a n v i m o n s r i
http://www2.cp.eng.chula.ac.th/~g38nwv
=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=
|
|
|
|
