issue with running several sound statements...only last statement will play sound

I have 4 sound statements in a row. When program is run, only the last sound statement plays wav file. However if I place a breakpoint at first sound statement and then stepthru, all of them play wav file. Is there a statement that needs to go in between sound statements?

%Listen to the sound at the different stages... sound(anlgSig,origSampRate,resolution); %play the original sound sound(sampledSig, reSampRate,resolution); %play the resampled sound signal sound(quantizedSig,reSampRate,resolution); %play the quantized signal sound(recoveredSig(1:length(quantizedSig)),reSampRate,resolution);%play the recovered sound at the receiver

Answer 1

[Geoff Hayes]

Franklin - since your four sound function calls follow one after the other, all four sounds are playing at roughly the same time. You have a couple of options. The first is to put a pause in between each call to sound given the number of samples being played and the sample rate.

 % play the original sound 
 sound(sampledSig, reSampRate,resolution);
 pause(ceil(length(sampledSig)/reSampRate));

 % play the resampled sound signal 
 sound(quantizedSig,reSampRate,resolution);
 pause(ceil(length(quantizedSig)/reSampRate));

 % etc.

The other option is to use the audioplayer

 % play the original sound 
 player = audioplayer(sampledSig, reSampRate,resolution);
 playblocking(player);

 % play the resampled sound signal 
 player = audioplayer(quantizedSig,reSampRate,resolution);
 playblocking(player);

 % etc.

We use the playblocking function to play the sound and not return control until the playback has completed. A nicer alternative to a pause.

[Franklin]

Thanks for the answer, Geoff!

The plablocking function works great.