How can i make the length of two vectors of two sound files(wav) equal to each other?

I want to add (operation +) two audio files in Matlab, but the console shows me an error, saying the lengths of the two files are different. How can I fix this? This is the code that I'm implementing to do this:

clc
clear all 
global Fs1;

%llamar archivo
[s Fs]=wavread('avemaria.wav'); %s = señal, fs = frecuencia de muestreo
[s1 Fs1]=wavread('sint1.wav');
%Tiempo de avemaria
tiempo=size(s,1)/Fs;
x=0:1/Fs:tiempo;

%Tiempo de Sintetizador1
tiempo1=size(s1,1)/Fs1;
x1=0:1/Fs1:tiempo1;

%Suma de los dos audios
sum=s+s1;
%Reproducir la suma de los dos audios
sound(sum, Fs);

To know the length of the two sounds I did this:

>> length(s)
ans =
      882011
>> length(s1)
ans =
      882438

And the console shows me the error:

Error using  + 
Matrix dimensions must agree.

Error in pruebas (line 18)
sum=s+s1;

How can I fix this problem?

I appreciate your help!!

Answer 1

[Image Analyst]

Try interp1() to make them match lengths.

Answer 2

[dpb]

First, don't use sum as a variable name; it's an internal Matlab function you'll not want to alias...

Second, to fix the lenght problem,

L=min(length(s),length(s1));  % the shorter length irrespective of which
stot = s(1:L) + s1(1:L);      % sum the two commensurate subsections

You could alternatively, of course, truncate the longer to the shorter...then you need to tell which is which w/ a test

[NAVEEN MANGAL]

This code shows "Index exceeds matrix dimensions" error, if we add two different .wav sound files.

[Image Analyst]

You forgot to show your code. Post it, plus the entrie error message (ALL the red text) in a new question.

[Walter Roberson]

what is size() of the data for each of the sound files?