Getting the error "too many input arguements" on filterDesigner

I am trying to design a kaiser low pass window via the filter designer tool. I am constantly getting an error even if I dont change anything and try to design a kaiser window with the default values.

Answer 1

[Walter Roberson]

The most common cause of problems similar to this, is if you happen to have a function on your MATLAB path that has the same name as one of the Mathworks provided functions.

Experiment with giving the commands

restoredefaultpath; rehash toolboxcache

and then trying again. If the problem goes away then Yes, some function on your path is interfering. (If the problem does not go away then there is still the possibility of the interfering function being in your current working directory)

[Syed Doha]

It worked. Thanks a lot.

[Walter Roberson]

That command in itself is not a permanent solution: you would need to save your MATLAB path for it to be permanent. However if you save your path you will lose access to any third-party packages that might be in your path.

I would suggest quitting MATLAB, then going back into MATLAB, and then starting pathtool and using it to move any third-party packages such as SPM12 to the bottom. With them being at the bottom, any mathworks-supplied function will have priority over them. You might, however, end up with the third-party package not working correctly, as it would (probably) end up using the Mathworks-supplied version of whatever-it-is.