MATLAB: Issue in importing Hlp from workspace

mathworks

I am working on filter design .i designed the filter using the filterBuilder and was done successfully and want to apply it on a signal.The designed filter is stored in workspace as Hlp but I am unable to use that in my script.

Please advise me something.

Thank you

Best Answer

You may use filter command to use Hlp object, where x is the input data.

y = filter(Hlp,x);

You may refer the following documentation for more details.

https://in.mathworks.com/help/signal/ug/filterbuilder-design-process.html#btrlxho-1

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MATLAB: Filter Designer to create FIR filters

You can design FIR filter with specific windowing technique using fir1 function in MATLAB. As an example, for Hamming window:

b = fir1(48,[0.35 0.65]); % b: filter coefficients

After running this command, the filter coefficients get stored in variable “b”.

You can then import this filter in the Filter Designer app. To import the filter, go to Filter Designer app and do the following:

Click on File >> Import Filter from Workspace
Select the filter structure
Give the variable name (“b” here) in which the filter coefficients are stored
Specify the sampling frequency
Click on Import Filter

Refer the following link, to know how to use “fir1” function:

https://www.mathworks.com/help/signal/ref/fir1.html

Following are the documentation links for “filerDesigner” app and “windowDesigner” app:

https://www.mathworks.com/help/signal/ug/getting-started-with-filter-designer.html

https://www.mathworks.com/help/signal/ref/windowdesigner-app.html

MATLAB: Import Data Into Workspace Issue

You can use 'fileparts' command to get the name of the file:

[pathstr,name,ext] = fileparts(filename); % Read the file name

Process/read the data from the file

eval([matlab.lang.makeValidName(name) '=' data ';']); % Assign the value to a variable named 'filename'

See the following documentation link for more information:

https://www.mathworks.com/help/matlab/ref/fileparts.html

https://www.mathworks.com/help/matlab/ref/matlab.lang.makevalidname.html

Best Answer

Related Solutions

MATLAB: Filter Designer to create FIR filters

MATLAB: Import Data Into Workspace Issue

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