请教！大家！！...

请大家帮忙看一下：http://www.microchip.com/1010/suppdoc/appnote/all/an543/index.htm 上的程序上data 后面的数据是怎么算的， 就是k1,k2,k3是怎么算出来的? Tone 1 Resonator Constants DATA [B]26510 [/B]; K1 = COS(wT) = COS(360*f/fs) DATA [B]9630 [/B]; K2 = SIN(wT) = SIN(360*f/fs) = init value of y(n-1) DATA [B]0 [/B]: K3 is init value of y(n-2) 00138 ; Tone 2 Resonator Constants DATA [B]21281 [/B]; K1 = COS(wT) = COS(360*f/fs) DATA [B]6229 [/B]; K2 = SIN(wT) = SIN(360*f/fs) = init value of y(n-1) DATA [B]0 [/B]; K3 is init value of y(n-2) 谢谢！！