MATLAB: Quiet sound after save

MATLABwav

I have a problem when I play the sound in matlab is ok, I create a wav file and when I play this file I can barely hear the sound. I use audiowrite(filename,y,Fs);

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This leaves some space for interpretations.

Are your earphones connected but you expect the sound to come from the speakers?
Is the sound stores in y very silent? See max(abs(y)) and class(y)
If the frequency Fs is chosen such, that the sound cannot be played by your speaker or heard by you? The frequency of the signal in y matters also.
Do you try to play the sound in an external player program, but its sound output is disabled?

So please post the code you use to create the signal and attach the sound file. Mention if you can hear the signal using sound and which software you use to play the sound. Can you use this tool to hear any other sound files with the expected level?

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MATLAB: What is the difference between Sound & Soundsc? And How can i play an audio file asynchronously

Is there something from the description that you don't understand: " soundsc(y) scales the values of audio signal y to fit in the range from –1.0 to 1.0, and then sends the data to the speaker at the default sample rate of 8192 hertz. By first scaling the data, soundsc plays the audio as loudly as possible without clipping. The mean of the dynamic range of the data is set to zero."

So soundsc() scales the sound to the max dynamic range while sound() does not. A quiet sound will sound quiet with sound(), but will sound louder with soundsc(). In other words, sound plays y, while soundsc does something like this:

maxy = max(abs(y));
louder_y = y / maxy;
sound(louder_y);

MATLAB: Because when I cut a stereo audio, this happens to be mono

x2 = x(1:1000,:);      %stereo

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MATLAB: What is the difference between Sound & Soundsc? And How can i play an audio file asynchronously

MATLAB: Because when I cut a stereo audio, this happens to be mono

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