making use of the dip system toolbox write matlab code to decimate incoming signal by 3x in 4 stages using cic filters in matlab

To decimate an incoming signal by 3x in 4 stages using CIC filters in MATLAB, you can make use of the dipdesign and dipfilt functions from the DIP System Toolbox. Here is the MATLAB code to achieve this:

main.m
% Step 1: Design the CIC decimation filters
decimationFactor = 3;
filterOrder = 2;
filterCoeff = dipdesign('cicdecim', decimationFactor, filterOrder);

% Step 2: Create the CIC filter objects
filterObj1 = dipfilt(filterCoeff);
filterObj2 = dipfilt(filterCoeff);
filterObj3 = dipfilt(filterCoeff);
filterObj4 = dipfilt(filterCoeff);

% Step 3: Read and decimate the incoming signal
inputSignal = ... % Replace with your input signal
outputSignal1 = dipfilt(filterObj1, inputSignal);
outputSignal2 = dipfilt(filterObj2, outputSignal1);
outputSignal3 = dipfilt(filterObj3, outputSignal2);
outputSignal4 = dipfilt(filterObj4, outputSignal3);
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In this code, we first design the CIC decimation filter using the dipdesign function with the 'cicdecim' option. The decimationFactor determines the level of decimation, and the filterOrder determines the order of the filter.

Next, we create four separate CIC filter objects (filterObj1, filterObj2, filterObj3, and filterObj4) using the dipfilt function and the filter coefficients obtained from the previous step.

Finally, we apply the CIC filters to the incoming signal sequentially using the dipfilt function. The output from each stage is then used as the input for the next stage.

Note that you need to replace inputSignal with your actual input signal. Also, make sure you have the DIP System Toolbox installed and added to your MATLAB path before running this code.