Sound in Matlab Problem

Make a new vector y3 consisting of the values of y corresponding to the first three seconds of sound. Play this sound (perhaps you recognise it?) using the command sound().

Can someone please give me hints to solve this question?

Thank you.

[Geoff Hayes]

What is y? Have you been given some audio data with a sampling frequency that you need to extract the first three seocnds from?

[Walter Roberson]

Hint: if your sample frequency is 8000 then one second is 8000 rows, two seconds is 16000 rows..

[Le Tien Dung Doan]

Here is the information of y: "There are a couple of predefined sound vectors in MATLAB. As one example, run the command load handel; to load a vector y and a sampling rate Fs into your workspace." Moreover, the value of sampling frequency is 8192hz.

I try to write the code as below but I think it might be wrong.

load handel.mat

y = 3*8192+1;

y3 = y;

sound(y3)

[Geoff Hayes]

y is the array of audio samples so you will want to extract the data from this array.

y3 = y(1:3*8192,:);

In your code, you are overwriting the y with a scalar.

[Le Tien Dung Doan]

I got it. Thank you so much