15 Threads found on edaboard.com: Fundamental Period
I read in a book that discrete time signals are periodic only if 'f' is a rational number. Why doesn't this rule apply for continuous time signals? For a continuous time signal x(t)=Acos(2πft) , let 'T' be fundamental period. Consider x(t+T) = Acos(2πf(t+T)) = Acos(2πft+2πfT)
By periodic property (...)
Digital Signal Processing :: 09-28-2013 11:07 :: KruthikaMithra :: Replies: 1 :: Views: 332
You need to ask yourself what Omega means. It is not simply the angular frequency in the sin / cos term. The overall function x is periodic, as implied by the N=19, so you can come up with the fundamental angular frequency corresponding to this period, and it is 2*pi/19.
Electronic Elementary Questions :: 08-01-2012 21:53 :: gadly :: Replies: 1 :: Views: 373
The greatest-common-divisor of f1 and f2 is the fundamental frequency; the least-common-multiple is the fundamental period.
I think the first example is what you're looking for:
Digital Signal Processing :: 07-08-2012 21:21 :: enjunear :: Replies: 1 :: Views: 2365
I'd use the cross() calculator function looking for the right-sense
zero crossings, and do the arithmetic to turn time into degrees.
Timebase being the fundamental period of whichever phase you
call the master reference.
Analog Circuit Design :: 06-18-2012 11:54 :: dick_freebird :: Replies: 9 :: Views: 649
Why does autocorrelation function approach zero at the fundamental period of a signal?
RF, Microwave, Antennas and Optics :: 03-25-2011 02:54 :: pushpanjali sharma :: Replies: 0 :: Views: 587
Digital Signal Processing :: 09-30-2010 00:40 :: gpffhdnzz :: Replies: 0 :: Views: 640
Also I have the above problem.
Why there is not any newer version of "simulating switched-capacitor filters with spectreRF" document for spectreRF2008?
In the above doc the netlist defines only the period and maxacfreq; while in specreRF there are so more parameters required, for example "fundamental tones" and beat frequency simultaneusly. A
Analog IC Design and Layout :: 05-17-2010 10:53 :: ahmadagha23 :: Replies: 2 :: Views: 1522
As you could see in
Illustrating the sine wave's fundamental relationship to the circle.
Its actually a plotting over the circle
now for all different values of Θ you will get different values of r..
now if you had to plot r versus Θ.. then one convenient way is to plot values of r (as
Electronic Elementary Questions :: 02-27-2010 09:29 :: akshay_d_2006 :: Replies: 3 :: Views: 761
Hi guys, i just recently succeeded with functioning stepper motor with PIC and UCN5804B, so i just did a fundamental test on stepper motor by pumping in different speed in the coding, but with 50% duty cycle. So i tried with 16ms period until 1.5 ms period, so 16 ms makes the motor slow and 1.5 ms makes it fast. i
understand how it works (...)
Electronic Elementary Questions :: 04-08-2009 04:55 :: thavamaran :: Replies: 2 :: Views: 1018
have a doubt reg checking DT periodic sequence:
x=cos(pi* (n)^2 / 8 )
it is periodic ofcourse, but in the solution manual its fundamental period is mentioned as 8.
but i got fundamental period=N=(2*pi/ omega )
in this case, N= (2*pi / (pi/8) ) = 16.
does anybody know (...)
Digital Signal Processing :: 03-28-2009 01:43 :: rramya :: Replies: 10 :: Views: 12489
Your ECG signal has very low amplitude at the fundamental frequency, so a plain FFT would give you poor info.
It would be better to apply some sort of non-linear filter to it first, such as computing fft(ECG_1 > 0.5) instead of fft(ECG_1).
This example shows the first strong spectral peak at about 1.23 Hz. Zoom in to see it:
Digital Signal Processing :: 09-29-2007 06:16 :: echo47 :: Replies: 23 :: Views: 9815
Ok, I located the example problem. Frankly, I dont understand your question. Are you speaking about Figure 3.7?
The figure explains the effect of different fundamental period T of the rectangular pulse. If T = 4T1, meaning, the rectangle pulse lying in the origin extents from -2T1 to 2T1 and if T = 8T1, then same lies between -4T1 to 4T1.
Digital communication :: 06-02-2007 14:56 :: cedance :: Replies: 4 :: Views: 1614
For a discrete-time signal to be periodic it has to satisfy
x=x where N is the fundamental period and the condition on it is that it should be an integer.
For a continuous-time signal to be periodic it has to satify
x(t+T)=x(t) where T is the fundamental period and there is no r
Electronic Elementary Questions :: 02-17-2006 02:34 :: purnapragna :: Replies: 3 :: Views: 30148
i am new to Matlab.Could anyone help me to generate and plot the below 3 sequences using Matlab "stem" function
qn1) What should i define in my script?
qn2) how do i obtain the fundamental period by just observing the graph?
Digital Signal Processing :: 01-17-2006 04:20 :: scdoro :: Replies: 0 :: Views: 645
i am new to Matlab.Could anyone help me to generate and plot the below 3 sequences using Matlab "stem" function What should i define in my script?
Digital Signal Processing :: 01-16-2006 09:46 :: scdoro :: Replies: 2 :: Views: 2467