1. I produced a unit set function in MATLAB however my professor requires me to use a ramp function to be multiplied to a signal to filter out unnecessary parts of an earthquake chirp, this is being used in my project to determine whether the chirp was caused by a nuclear bomb.
2. ideally...
I'm doing some research with MATLAB, where i have a simple chirp. y = sin(x.^2)
i take the FFT of the chirp, set the upper half of the FT of the signal to 0, and take the IFFT of this to recover the original chirp y with real and imaginary parts.
then i use the formula for calculation of the...
the course is called "the Fourier transform and its applications" so yeah I'm pretty sure i don't mean laplace transform. can someone help please my midterms tommorow and i have no clue..
1. find the inverse FT of 1/(iw+3)3
2. well partial fractions gave the same thing back... I'm not sure how to transform this as there's no property that deals with cubics.
3. i tried using the differentiation property but it doesn't work as it increases the power of 3 to 4 and so...
1. find the inverse Fourier transform of f(w)=e-i5wsinc(2w)
2. I set up the integral to be from defn of sinc: 1/2pi*integral from -infinity to infinity (sin(2w)/2w)*e^-5w
3. i have no idea how to solve this integral, is there a better way to do this?
i know that rect(t) has a...
1. how do i find the period of summation of some function ie: 2^-k or cos(pi k) multiplied by some complex exponential ei7kt
ie: f( t ) = \sum 2-kei7kt
2. does anyone know the formula for finding the period of summations of complex exponentials? note this is for fourier
3. would i say that...
you're just asking me what I'm asking you in other words
im not sure. the fund freq is the smallest period for the function and pi/3 and pi/4 are those... summed right