mirror of
https://github.com/saitohirga/WSJT-X.git
synced 2024-11-29 23:58:39 -05:00
38 lines
806 B
Fortran
38 lines
806 B
Fortran
|
subroutine compress(c)
|
||
|
|
|
||
|
|
parameter (NMAX=15*12000) !Samples in iwave (180,000)
|
||
|
|
complex c(0:NMAX-1)
|
||
|
|
real xr(0:NMAX-1),xi(0:NMAX-1)
|
||
|
|
|
||
|
|
xr=real(c)
|
||
|
|
call wavestats(xr,NMAX,rms,pk,pwr_pk,pwr_ave)
|
||
|
|
xr=xr/rms
|
||
|
|
xi=aimag(c)/rms
|
||
|
|
|
||
|
|
do i=0,NMAX-1
|
||
|
|
c(i)=rms*cmplx(h1(xr(i)),h1(xi(i)))
|
||
|
|
enddo
|
||
|
|
|
||
|
|
! par=pwr_pk/pwr_ave
|
||
|
|
! write(*,1010) 5,rms,pk,pwr_pk,pwr_ave,par
|
||
|
|
!1010 format(i3,2f10.3,3f10.2)
|
||
|
|
! call wavestats(xi,NMAX,rms,pk,pwr_pk,pwr_ave)
|
||
|
|
! par=pwr_pk/pwr_ave
|
||
|
|
! write(*,1010) 5,rms,pk,pwr_pk,pwr_ave,par
|
||
|
|
|
||
|
|
return
|
||
|
|
end subroutine compress
|
||
|
|
|
||
|
|
subroutine wavestats(x,kz,rms,pk,pwr_pk,pwr_ave)
|
||
|
|
|
||
|
|
real x(kz)
|
||
|
|
|
||
|
|
sumsq=dot_product(x,x)
|
||
|
|
rms=sqrt(sumsq/kz)
|
||
|
|
pk=max(maxval(x),-minval(x))
|
||
|
|
pwr_pk=pk*pk
|
||
|
|
pwr_ave=sumsq/kz
|
||
|
|
|
||
|
|
return
|
||
|
|
end subroutine wavestats
|