Unable to play the "audiowrite" file from the folder

I have written a downsampled wav file via audiowrite to a folder. I am able to play the sound signal in matlab using "sound(file)". However, I am unable to play it from the folder.

% Code:

Fs = 16000;

Fd=1600;

old = audioread(file);

new = resample(old, Fd, Fs);

sound(new,Fd);

audiowrite(file1, new, Fd);

[Jan]

Please explain what "playing from a folder" means. Maybe it matters that you use "file" and "file1"? Perhaps you forgot to specify the folder for saving? "sound(file)" does not occur in the posted code, so are you sure that this works?

[Prithvi Pani]

file (and file1) is already specified to be a wav file (whose path I have not mentioned as it is irrelevant here). Playing from folder means that I am going manually to that path and trying to play it using VLC player (which shows a duration of 2 seconds but plays no sound out) I meant to say "sound(new, Fd)"

Answer 1

[Jan]

It does not matter where the data are coming from. So let's narrow down the problem:

Fd  = 1600;
new = 1 - 2 * rand(1, 3200);
sound(new, Fd);
audiowrite(file1, new, Fd);

If now Matlab does play the sound, but VLC does not, it is a problem of VLC. Try it:

new2 = audioread(file1);
sound(new2, Fd);

Does it work in Matlab? Then try a different external tool to play the sound. Maybe you have reduced the volume in VLC or "file1" is in a different folder than you expect it to be and you feed VLC with an old (silent) file?