https://ch.mathworks.com/help/dsp/ref/dsp.variablebandwidthfirfilter-system-object.html
dsp.VariableBandwidthFIRFilter - Variable bandwidth FIR filter - MATLAB
The dsp.VariableBandwidthFIRFilter object filters each channel of the input using FIR filter implementations.
fir filterdspvariablebandwidthmatlab
https://nl.mathworks.com/help/dsp/ref/dsp.variablebandwidthfirfilter-system-object.html
dsp.VariableBandwidthFIRFilter - Variable bandwidth FIR filter - MATLAB
The dsp.VariableBandwidthFIRFilter object filters each channel of the input using FIR filter implementations.
fir filterdspvariablebandwidthmatlab