I was implementing weighted autocorrelation function. While adding noise I'm facing Too many input arguments Error.

The Error is

Error using addnoise

Too many input arguments.

Error in WAF_original (line 55)

input = addnoise( s,Fs, snr(snri), 1);

[Mathieu NOE]

hello

addnoise is not a standard matlab function as far as I can tell

there are 2 FEX submissions about addnoise are you using one of those ?

addnoise( sig , SNRdb ) - File Exchange - MATLAB Central (mathworks.com)

dsplabs/matlab-addnoise - File Exchange - MATLAB Central (mathworks.com)

the way you pass the paramterers in your code is not appropriate if you use the FEX functions