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请帮忙解释下面代码含义,谢谢!; F7 ]& `: s, X2 d( F
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sos[0] = 0.032317154109478;//61929934686f;//g& v. K7 Q8 m# r9 x
sos[1] = -1.952610254287720;//179495329f; //a10 [# F" [, ^4 J, T2 \9 O5 s
sos[2] = 0.958325564861298;//218238323f; //a2
( q* F, y0 y; l7 s5 I# h Q sos[3] = 1;//218238323f; //b1
, E6 K7 O; A- \0 R: } sos[4] = 0;//218238323f; //b2
+ U$ j- I4 [& A! H& k2 Y/ M sos[5] = -1;//218238323f; //b3
2 s/ A2 _$ ?, A) h. H) x IIR_2nd_filter(psignal, lg, pmem, sos);. S4 C+ X, n2 V1 S0 R, r
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