mirror of
https://github.com/saitohirga/WSJT-X.git
synced 2024-11-18 10:01:57 -05:00
53 lines
1.1 KiB
Fortran
53 lines
1.1 KiB
Fortran
|
subroutine genwave(itone,nsym,nsps,nwave,fsample,hmod,f0,icmplx,cwave,wave)
|
||
|
|
|
||
|
|
real wave(nwave)
|
||
|
|
complex cwave(nwave)
|
||
|
|
integer hmod
|
||
|
|
integer itone(nsym)
|
||
|
|
logical ex
|
||
|
|
real*8 dt,phi,dphi,twopi,freq,baud
|
||
|
|
|
||
|
|
dt=1.d0/fsample
|
||
|
|
twopi=8.d0*atan(1.d0)
|
||
|
|
baud=fsample/nsps
|
||
|
|
|
||
|
|
! Calculate the audio waveform
|
||
|
|
phi=0.d0
|
||
|
|
if(icmplx.le.0) wave=0.
|
||
|
|
if(icmplx.eq.1) cwave=0.
|
||
|
|
k=0
|
||
|
|
do j=1,nsym
|
||
|
|
freq=f0 + itone(j)*hmod*baud
|
||
|
|
dphi=twopi*freq*dt
|
||
|
|
do i=1,nsps
|
||
|
|
k=k+1
|
||
|
|
if(icmplx.eq.1) then
|
||
|
|
cwave(k)=cmplx(cos(phi),sin(phi))
|
||
|
|
else
|
||
|
|
wave(k)=sin(phi)
|
||
|
|
endif
|
||
|
|
phi=phi+dphi
|
||
|
|
if(phi.gt.twopi) phi=phi-twopi
|
||
|
|
enddo
|
||
|
|
enddo
|
||
|
|
|
||
|
|
!### TEMPORARY code to allow transmitting both A and B submodes
|
||
|
|
inquire(file='Q65_Tx2',exist=ex)
|
||
|
|
if(ex) then
|
||
|
|
k=0
|
||
|
|
do j=1,nsym
|
||
|
|
freq=f0 + itone(j)*2.d0*hmod*baud + 500.d0
|
||
|
|
dphi=twopi*freq*dt
|
||
|
|
do i=1,nsps
|
||
|
|
k=k+1
|
||
|
|
wave(k)=0.5*(wave(k)+sin(phi))
|
||
|
|
phi=phi+dphi
|
||
|
|
if(phi.gt.twopi) phi=phi-twopi
|
||
|
|
enddo
|
||
|
|
enddo
|
||
|
|
endif
|
||
|
|
!###
|
||
|
|
|
||
|
|
return
|
||
|
|
end subroutine genwave
|