Recording a sound and inserting to a matrix as a new column

I am recording sounds on MATLAB and user is deciding how many sound will record

I want to make

sound(recorded(:,1));

will give first sound and

sound(recorded(:,2));

will gice second sound. It will go like that if user recorded n sound

user can listen n-1. or n-2 column with

sound

command

what I need to do? there are my codes

while i < signalNum+1
    fprintf('%d. sound: \n',i);
    recorderA= audiorecorder(48000,16,2);
    record(recorderA,3);
    pause(time);
    fprintf('end of record');
   
    for a=3:-1:1
    fprintf('Next record',a);
    pause(1)
   
    end
    
    recordedS = getaudiodata(recordedA); %I have tried recordedS = getaudiodata(recordedA(:,i));
    recordedA= recordedA(:,i);
    i = i + 1;
end