# Chandra

**Programming Languages:**

C++

**Spoken Languages:**

English

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**Content Feed**

Output of an LTI System through both Fourier transform and Convolution

Hi, add zero padding to the signal before converting to frequency domain because it should match the length of convolution sign...

4 mesi ago | 0

unable to match the vector length for left and right side for the e(k) value

Hi, In this code, tr using a cell when assigning an array and extract the values individually when plotting So here are some c...

4 mesi ago | 0

| accepted

convert ppg signal into visible graph

Hi, use this code to plot the values on graph load('all_subjects (1).mat'); for i = 1:219 %change the range depe...

4 mesi ago | 1

| accepted

How to write a program which gives output in form of table for students grade and each time i run the program the marks for each student should change randomly?

Hi, Please refer to writetable function example LastName = {'Smith';'Johnson';'Williams';'Jones';'Brown'}; Age = [38;43;3...

4 mesi ago | 0

How to minimize the length of my script using loops

Hi, clc;clear;close all; % known variables frequency = [100,1e3,10e3,100e3]./1e3; %to calculate dielectric constant eps_0...

4 mesi ago | 1

How using a loop to add up the same numbers in a matrix and store the numbers in a new matrix

Hi, Here the code is shown such that the values stored are non repeatednon-repeated and addition of repeated values together ...

4 mesi ago | 0

Plot time continous singal by using a sum of time invariant signals

Hi, Replace the “symsum” function with “for” loop and plot the signal f_s = 2; Ts = 1/f_s; t = -5:Ts:5; % chan...

4 mesi ago | 0

Create an LTI system from .wav file

Hi, To pass a signal through a LTI system is done through convolution of transfer function and input signal [data,Fs] = audior...

5 mesi ago | 0

Filter Design using FIR method question

Hi, use fir1 function to get the coefficients and use freqz for frequency response or use filter function to filter the signal ...

5 mesi ago | 0

Downsampling a selection of images before converting them to video

Hi, try using "imresize" function in the "for" loop for i=1:numel(imagelist) img=imread(imagelist{i}); img = imresiz...

5 mesi ago | 0

| accepted

Convert .WAV to MP3 in the absent of Waveread function

Hi, Try using the following link https://www.mathworks.com/matlabcentral/fileexchange/6152-mp3write-and-mp3read use the funct...

5 mesi ago | 0

| accepted

I am stucked while plotting time discrete for the inverse z transfer.

Hi, By applying partial fraction to the z transform it gives inverser transform gives , expandi this equation by changing t...

5 mesi ago | 0

Matlab Sound Output Signal Different than input waveform when viewed with -Scope

Hi, Try to save the data using "audiowrite" and then play without using sound function i.e., directly on the system and then ob...

5 mesi ago | 0

How to filter high frequencies from recorded data?

Hi, To remove high frequency noise, pass the signal through low pass filter. Low pass filter can be of averaging filter, butte...

5 mesi ago | 0

| accepted

plotting Fourier series periodic signal ?

Hi, For plotting x(t) use stem function T1 = 2; T0 = 8; x1 = ones(1,2*T1); % 1 i.e., 0<t<T1 x2 = -1*ones(1,T0/2-T1);...

5 mesi ago | 0

| accepted

Resolution and Sampling frequency

Hi, To obtain the desired results use sound function with different parameters >>sound(y,Fs,nBits) % y – input signal,...

5 mesi ago | 0

Matlab Sound Output Signal Different than input waveform when viewed with -Scope

Hi, Try using different sampling frequency that is suitable to the given signal, try to maintain the sampling frequency more ...

5 mesi ago | 0

Need help using fft to create a real spectre

Hi, FFT for any signal has real and imaginary party, if input signal is even then fft is real and for odd signal fft is imag...

6 mesi ago | 0

How can export files form DICOM Browser?

Hi, Select Export Volume >> Export series to workspace Then the save the file using dicomwrite or select individual image an...

6 mesi ago | 0

make objects the same class as those around them

Hi, Objects of blue colour surrounded by the objects of orange are to be classified into orange objects Classifying the objec...

6 mesi ago | 0

view all slides of the DICOM file in a single image

Hi, To view all images in a single figure window use Here is an example to view the image >>[X,map] = dicomread("US-PAL-...

6 mesi ago | 0

| accepted

how Can I fit the multiple data sets by using the curve Fitting Tool in MATLAB?

Hi, Use the below example to fit a curve >>load hahn1 %Create a fit using the fit function, % specifying the variables an...

6 mesi ago | 0

What the difference between plotting the function f(z) (where its coefficients change with time) and plot of its zeros which evolves with time t

Hi, The value of z is a complex value, so provide x and y values in z accordingly and provide the variable to function >...

6 mesi ago | 0

convolving 1D filter in 1D signal

Hi, For 1D convolution the two signals should be vector form while doing convolution. If e is 1D then use Conv function . If ...

6 mesi ago | 0

How can I plot the contour of the imaginary unit of this function phiz?

Hi, Imaginary term generally indicates the axis of a graph, (2,3) can be written as 2+3i is some applications and magnitude g...

6 mesi ago | 0

How can I resample data to a fixed time grid?

Hi, I understood that if a given input data of any length should be adjusted to length of time that provided, irrespective of s...

6 mesi ago | 0

Hanning window on Imported data

Hi, To pass a filter over signal we can use "filter" function with appropriate coefficients >>w = hann(64); % we can use desi...

6 mesi ago | 0

| accepted

How to find the peaks of a PPG signal?

Hi, To find peaks of any signal initially it needs to be filtered through low pass in order to clear the local peaks >>windowS...

6 mesi ago | 1

i cant use interpolation in matlab

Hi, 'interp3' expects the x,y,z,v inputs in meshgrid ordering >> Vq3 = interp3(y,x,z,v,Yq,Xq,Zq); % meshgrid order for X, Y,...

6 mesi ago | 0

| accepted

given a speech signal(.wav) file, we are required to plot cosine waves over it like cos(k1*x),cos(k2*x).I tried using dct function but to unable to proceedd

Hi, By multiplying the cosine signal over the sound signal we can get the required signal Use the following code to g...

6 mesi ago | 0