PDF and WSS analysis help please

hi,

need help i have an audio (attached) file that i want to check the "pdf" on every 30msec buffer then check if its WSS

[y,Fs] = audioread('G:\sema\word.m4a');  //load audio file 
B= buffer(y,Fs*0.03) //buffer evry 30 msec
m= mean(B)
v=std(B)
out = normpdf(B, m, v)

but then i get

Error using normpdf (line 36)
Non-scalar arguments must match in size.

and i dont understand why

i want to plot the pdf for each buffer

after i would like to check if thay are WSS

thanks

Answer 1

[Star Strider]

I’ll let you sort out the meaning of ‘out’, but this runs:

m= mean(B);
v=std(B);
mm = repmat(m, size(B,1), 1);
vm = repmat(v, size(B,1), 1);
out = normpdf(B, mm, vm);

I have no idea what you’re doing, so I’ll leave the rest to you to interpret.