I have this code that is do plotting while recording at the same time, and I want to add lines so that it takes a decision when it detects some pattern from the plotted figure

close all
clear all
clc
%Define parameters
fs = 96000; % Sampling frequency
nBits = 24; % Number of bits
nChannels = 1; % Number of channels
duration = inf; % Duration of recording in seconds
%Create recorder object
recObj = audiorecorder(fs, nBits, nChannels);
disp('Start Recording:')
recObj.record(duration);
while recObj.isrecording()
    pause(0.1);
    plot(recObj.getaudiodata());
    title('The recording of ')
    xlabel('Time')
    ylabel('Audio Signal')
    drawnow();
    
    %Check for key press
    if isequal(get(gcf,'CurrentKey'),'escape')
        %Stop recording if 'Escape' is pressed
        break;
    end
end 
disp('End of Recording');