Sound in Matlab Problem

2020 8 20
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更新时间：2020 8 21
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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.

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Geoff Hayes
Geoff Hayes 2020-8-20
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
Walter Roberson 2020-8-20
Hint: if your sample frequency is 8000 then one second is 8000 rows, two seconds is 16000 rows..
Le Tien Dung Doan
Le Tien Dung Doan 2020-8-20
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
Geoff Hayes 2020-8-20
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
Le Tien Dung Doan 2020-8-21
I got it. Thank you so much

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