MATLAB: Plz tell me how i save this audio and after that i will check that this audio file matches or not please help me in this regard….

audio

a= audiorecorder(8000,8,1)
record(a,5)
b=getaudiodata(a)
plot(b)
sound(b)

Save it where?

save('OutputFile.mat', 'b');       %save as .mat file
wavwrite(b, 'OutputFile.wav');     %save as WAV file.

Look at the help for:

wavwrite.m and auwrite.m

If you are going to work with the audio in MATLAB, you can just save it as a .mat file with save

If you have the DSP System Toolbox, you can use dsp.AudioFileWriter, which gives you a couple more format than .wav

Difficult to say. You might not have a speaker or sound card connected, or its volume might not be up high enough or it might be muted.

Or perhaps you should be using

[y,fs] = waveread('filename');
sound(y,fs);