|
我用FFT軟體算出x=[1,2,3,4,5,4,3,2]8個序列點的值,7 c' E% n; W; E, k8 K9 s
9 Z- C2 ^; x& Y; \" {, K2 o% uX[0] = 24+(0)j9 j% M$ o" E3 q. c2 M: g
X[1] = -6.82842712475+(-1.33226762955E-15)j# `- S7 U- ?$ M; D) H
X[2] = 3.09539720245E-17+(0)j! S4 s& p3 p O( @- v1 _, ]; T$ U! A
X[3] = -1.17157287525+(2.88657986403E-15)j& b! e2 F3 f. F/ T8 n& W/ s2 |9 |
X[4] = 0+(-4.89842541529E-16)j# W6 ?( [. T* i/ s: u
X[5] = -1.17157287525+(-2.44249065418E-15)j
/ i. k- n, X& _1 f; [" L A) mX[6] = -9.86282453277E-15+(-6.66133814775E-16)j: ^8 |: P8 G! \$ U1 r6 y/ c
X[7] = -6.82842712475+(-2.22044604925E-15)j- M. z& x9 ^$ V2 l) m5 d5 w
6 i1 h( B2 P- g我該如何藉由這些值算出SNR及THD呢? |
|