26 Jun
2011
26 Jun
'11
5:24 p.m.
On Sat, 25 Jun 2011 16:23:29 +0200 (CEST)
pshirkey(a)boosthardware.com wrote:
Hi,
Can anyone point me to a simple code example for how to determine the
phase at a specific time in a waveform?
ex. if I have a sample that is 5 seconds long and want to know the phase
at 2.5 seconds
I'm open to code in any language or a scripted example if such a tool
exists. If there is an ui which has that feature I am also interested.
There isn't really a way to do this. How would you tell the difference between
0.5*sin(pi/2)
and 1.0*sin(pi/6) - try it and see, what are the answers?
If you want to determine phase you need to know the amplitude. The only sane way to do
both is
to use a complex sample with an in-phase and a quadrature component.
Gordon MM0YEQ