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(a) Find the spectrum of this waveform: x = [ exp( -[0:1:49]/10), exp(-[50:-1:1]/10)]. Subplot only the magnitude by using the spectrum program from the class notes.
(b) Using this information from the 100-point DFT, re-create the waveform by summing the sinusoidal contributions from all the DFT coefficients as done in lecture. Show both the waveform x and its re-creation xhat on another subplot. (The waveforms might merge into one figure so the mean square error is effectively zero in this case.)
(d) Using MATLAB, find the index n0 at which the spectral magnitude falls below 0.05 of its maximum (which is a point beyond which there is little energy left in the higher frequencies.)
(e) Using only the first n0 DFT coefficients, generate the waveform and plot in Matlab by using the symmetry properties of the transform. Plot xhat over the actual signal and annotate the plot to indicate the value of the calculated mse. Title and label the axes. Submit plot and code.
The pressure radiated by a column of in-phase monopole sources may be expressed as: Create a model (spreadsheet / MATLAB etc) for a 6 element column, where d=0.2m . Figure
An FIR filter has coefficients b = [ 1.0000 -0.6387 1.0214 0.8210 -0.7470 1.0920 ] (a) Find H(z) for the filter and plot its frequency response (magnitude and phase
clear clc %% DATA INPUT filename = input('Enter file name, including its extension: ', 's'); D = load(filename); %or load('Mphi.out'); %% %Trendline %Evaluates
Type logical: The type logical is used to store the true/false values. If any variables have been formed in the Command Window, they can be seen at the Workspace Window. In
Function char: The function char does the opposite; it converts from any number type to the type char: >> char(numequiv) ans = a As the letters of the alphabet are
Read in any non jpeg image (any image will do) . Save it as a jpeg at quality levels (70, 60,50,40, 30) Get the MSE for each quality level as compared to the orignal file Get the
Strings: The MATLAB also handles strings that are a sequence of characters in single quotes. For illustration, using the double function on a string will represent the equival
In MATLAB, create a correlation matrix for all of the variables in the data (it should be an 8x8 matrix). To do this you will have to convert the "southern"variable into a number.
how to wriet program for batch reactor
Some recent column source designs incorporate ‘beam steering', where the phase of each element in the column is varied in order to change the angle at which the major lobe appears.
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