How can I design an FIR filter with custom specifications using Kaiser window method?

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Berke Gozneli 2015-5-8

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https://ww2.mathworks.cn/matlabcentral/answers/215700-how-can-i-design-an-fir-filter-with-custom-specifications-using-kaiser-window-method

Hi, as a part of my signal processing class project, I need to design an FIR filter with the following properties:

Causal, linear-phase, low-pass FIR filter with the specifications: • Pass-band edge fp = 2 kHz • Stop-band edge fs = 2.5 kHz • Pass-band tolerance ∆p = Stop-band tolerance ∆s = 0.05

I have limited MATLAB knowledge and I have looked at the commands for FILTER designs, however couldn't find a command with this many specification options. I would appreciate it a lot if someone can show me how to do this!