MATLAB: Do I receive errors when I use the FIR1 function without any input arguments in Signal Processing Toolbox 6.8 (R2007b)

argumentsfir1inputSignal Processing Toolbox

It is mentioned in the documentation that the FIR1 function can be called without any input arguments. However, I receive the following error message when I implement the same:

 ??? Error using ==> fir1 at 62
 Not enough input arguments.

Best Answer

This is an error within the documentation for Signal Processing Toolbox 6.8 (R2007b) within the Syntax section of FIR1 function. The FIR1 function cannot be used without any input arguments.

Related Solutions

MATLAB: Do I receive an error in regards to the number of arguments to the STRUCT function when used within an Embedded MATLAB function block in Simulink 6.6 (R2007a)

This bug has been fixed in Release 2007b (R2007b). For previous product releases, read below for any possible workarounds:

The ability to use the STRUCT function with more than 64 arguments is not available in Simulink 6.6 (R2007a).

To work around this issue, pass in less than 64 arguments.

MATLAB: FIR1 basic question

Hi, One major problem that you have is that you do not define your normalized frequencies correctly. If you want a passband between [80, 120]

Then your normalized frequencies are:

    fp1 = (2*80)/fs;
    fp2 = (2*120)/fs;
    b = fir1(12,[fp1 fp2]);
    Filt_out = filter(b,1,Y);
    plot(t,X)
    hold on
    plot(t,Y,'r')

I would recommend designing your filter with fdesign.bandpass unless you have some compelling reason to use fir1

Best Answer

Related Solutions

MATLAB: Do I receive an error in regards to the number of arguments to the STRUCT function when used within an Embedded MATLAB function block in Simulink 6.6 (R2007a)

MATLAB: FIR1 basic question

Related Question