|
我用FFT軟體算出x=[1,2,3,4,5,4,3,2]8個序列點的值,
" |$ ?( j1 c' W# P8 Y9 S
$ c- z7 K6 ^$ W6 cX[0] = 24+(0)j8 T' E% x3 E$ I! B* P
X[1] = -6.82842712475+(-1.33226762955E-15)j: J) ?. p! w; h0 [7 {: s
X[2] = 3.09539720245E-17+(0)j s m/ Y) X2 O
X[3] = -1.17157287525+(2.88657986403E-15)j
5 Q* J: ]# {& H$ f: I( LX[4] = 0+(-4.89842541529E-16)j2 I: T" b X! y
X[5] = -1.17157287525+(-2.44249065418E-15)j
9 X d; u. B8 Y% P- d5 sX[6] = -9.86282453277E-15+(-6.66133814775E-16)j/ o7 A/ s% j% t9 x' p1 E
X[7] = -6.82842712475+(-2.22044604925E-15)j# q9 w9 i2 A9 |( n+ w, q
0 M+ A! P/ N* y. C
我該如何藉由這些值算出SNR及THD呢? |
|