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Ä¿¹Â´ÏƼ>ÀÚ·á½Ç |
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DSP Low Pass Filter(À½Àåó¸®) |
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2013.01.26 |
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DSP Low Pass Filter(À½Àåó¸®) |
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¾Æ·¡ ¿¹´Â DSP¸¦ ÀÌ¿ëÇÏ¿© À½Àå󸮽à ·Î¿ì Æнº ÇÊÅÍ ¿¹ÀÔ´Ï´Ù.
move #SECTION12DB,r0
move X:LEFT_FRONT,A move #FR_LPF_COEF_WORK,r7 move A,Y1
move #FR_LFT_LPF_S1,r1
move #FR_LFT_LPF_S1+2,r2
jsr LPF move Y1,A
move A,X:LEFT_LPF_FRONT
rts
ORG P: opt cc LPF ori #$08,mr
move x:(r1),a y:(r7)+,y0
asr a ;a=wi1/2
do r0,_ends
macr y0,y1,a x:(r2),b y:(r7)+,y0
asr b a,x0
mac y0,y1,b y:(r7)+,y0
macr x0,y0,b y:(r7)+,y0
mpy y0,y1,b b,x:(r1)+ y:(r7)+,y0
macr x0,y0,b x:(r1),a a,y1
asr a b,x:(r2)+ y:(r7)+,y0
_ends NOP ANDI #$F7,MR
NOP rts
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