Error "gausswin requires Signal Processing Tool"

I have an issue while using the command "Stamps (2,2)". Could you please help me with this problem? Here's what happens:

gausswin requires Signal Processing Toolbox.

Error in clap filt (line 47)

B=gausswin(7) *gausswin(7) ' ;

Error in ps est gamma quick (line 225)

ph_filt(:,:,i)=clap_filt(ph_grid(:,:,i),clap_alpha, clap_beta,n_win*0.75,n_win*0.25,

Error in stamps (line 326)

ps_est_gamma_quick (est_gamma_parm);

[Mathieu NOE]

hello

as the error message tells you you probably don't have access to the Signal Processing Tbx (could be useful if you work a lot with signals , BTW)

a simple workaround is to create you own gaussian window function as shown below

NB , as I was very lazzy , I didn't used the "alpha" in the parameters but you can easily change my code if you need :

N = 7;
w = gauss_window(N);
plot(w)

function w = gauss_window(N)

    L = N-1;  
    n = (0:L)'-L/2;
    alpha = 2.5; % Default value for Alpha
    w = exp(-(1/2)*(alpha*n/(L/2)).^2);

end

Answer 1

[Steven Lord]

The gausswin function is part of Signal Processing Toolbox. Do you have this toolbox installed and licensed? To check if you have it installed use the ver function.

ver signal

-------------------------------------------------------------------------------------------------
MATLAB Version: 24.2.0.2790852 (R2024b) Update 2
MATLAB License Number: 40912989
Operating System: Linux 5.15.0-1062-aws #68~20.04.1-Ubuntu SMP Wed May 1 15:24:09 UTC 2024 x86_64
Java Version: Java 1.8.0_292-b10 with AdoptOpenJDK OpenJDK 64-Bit Server VM mixed mode
-------------------------------------------------------------------------------------------------
Signal Processing Toolbox                             Version 24.2        (R2024b)

To check if you have it licensed, use license.

license test signal_toolbox

ans = 1