On Fri, Nov 11, 2016 at 11:14 AM, Ahmed Husain ?Abbas Mohamed Sahrab <address@hidden> wrote:
it's a 42k X 2 vector, I'm having a rather difficult time using octave, sometimes it gets the data from the audio file and sometimes it's just rows of zeros.
I tried your command to no avail
Did you try
[Pxx,F] = periodogram(y(:,1),[],NFFT,fs);
what error do you get?
Best Wishes
Ahmed Suhrab
From: Doug Stewart <address@hidden>
Sent: Friday, November 11, 2016 6:49:21 PM
To: Ahmed Husain ?Abbas Mohamed Sahrab
Cc: address@hidden
Subject: Re: Quick Question About Signal Processing
On Fri, Nov 11, 2016 at 8:55 AM, Ahmed Husain ?Abbas Mohamed Sahrab <address@hiddenpolytechnic.bh > wrote:
Dear Esteemed Volunteers.
I have a question about incorporating a piece of code into my project.
I have found this piece of code online
Fs = 1000; t = 0:1/Fs:1-1/Fs; x = cos(2*pi*100*t)+randn(size(t)); [Pxx,F] = periodogram(x,[],length(x),Fs) ; plot(F,10*log10(Pxx)) and I would like to use the wavread command and use that signal in place of the Fs,t and x. So, I wrote this bit of code
[y, fs]= wavread('song1.wav');NFFT=input("Choose a fraze size of either 128, 256 and 512. ");[Pxx,F] = periodogram(y,[],NFFT,fs);
plot(F,10*log10(Pxx))
But I am sad to report this it is not working, and that I am receiving this error⹏፥error: periodogram: X must be a real or complex vector
what is the dimension of y?
It might have 2 col.
If it does then try y(:,1)
If you can help me I would appreciate it immensely
With Love,
Ahmed Suhrab
_______________________________________________
Help-octave mailing list
address@hidden
https://lists.gnu.org/mailman/listinfo/help-octave
--