mirror of https://github.com/saitohirga/WSJT-X.git
31 lines
532 B
Fortran
31 lines
532 B
Fortran
subroutine foldspec9f(s1,nq,jz,ja,jb,s2)
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! Fold symbol spectra (quarter-symbol steps) from s1 into s2
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real s1(nq,jz)
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real s2(240,340) !340 = 4*85
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integer nsum(340)
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s2=0.
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nsum=0
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do j=ja,jb
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k=mod(j-1,340)+1
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nsum(k)=nsum(k)+1
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do i=1,NQ
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s2(i,k)=s2(i,k) + s1(i,j)
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enddo
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enddo
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do k=1,340
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fac=1.0
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if(nsum(k).gt.0) fac=1.0/nsum(k)
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s2(1:nq,k)=fac*s2(1:nq,k)
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enddo
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ave=sum(s2)/(340.0*nq)
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if(ave.gt.0.0) s2=s2/ave
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return
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end subroutine foldspec9f
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