26 Jun
2011
26 Jun
'11
8:54 p.m.
On Sunday, June 26, 2011 02:48:01 PM Gordon JC Pearce did opine:
On Sat, 25 Jun 2011 16:23:29 +0200 (CEST)
pshirkey(a)boosthardware.com wrote:
I do not see how a repeatable, and therefore measurable quadrature
component can be developed in a complex, multi-frequency waveform since the
quadrature component is just as frequency dependent as any other method of
measurement.
Since the human ear is not sensitive to phasing, other than diffs between
the two ears from delay/echo/reverb effects that help us determine
direction of src, to me, this argument is moot and possibly a waste of
time.
Cheers, gene
--
"There are four boxes to be used in defense of liberty:
soap, ballot, jury, and ammo. Please use in that order."
-Ed Howdershelt (Author)
If parents would only realize how they bore their children.
-- G.B. Shaw
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