Power spectral density of voice recording

Hello

I have recorded a voice with sampling frequency and other parameters. Now, I want to find out the power spectral density for that. In order to find that, should I use the pwelch function, or is there any other technique?

I'm writing the code below:

clc;

clear all;

voice= audiorecorder(22050,8,1);

disp('Start recording'); %To start speaking

recordblocking(voice,5); %Stops the recording after 20 seconds

disp('End recording'); %Message displays end of recording

a= getaudiodata(voice); %Gets the data of voice signal and stores in a variable 'a'

%figure;

%plot(a); %Plots a graph of the voice signal

title('Audio signal'); %Title of the voice signal

xlabel('time in sec'); %X-axis

ylabel('Amplitude'); %Y-axis

b=pwelch(a);

plot(b);

Answer 1

[Image Analyst]

Yes, pwelch() is fine. That's what I'd use.