diff --git a/speech_analysis.m b/speech_analysis.m
index 32efb30..94730e7 100644
--- a/speech_analysis.m
+++ b/speech_analysis.m
@@ -21,4 +21,11 @@ plot(t,y)
 %xlabel('Time (s)');
 %ylabel('Sound (dB)');
 
-frequencySpectrum(y, fs, false);
+%Frequency spectrum using DFT
+[powerDFT durationDFT] = frequencySpectrum(y, fs, false);
+
+%Frequency spectrum using FFT
+[powerFFT durationFFT] = frequencySpectrum(y, fs, true);
+
+sprintf(["time used for DFT: "  num2str(durationDFT)])
+sprintf(["time used for FFT: " num2str(durationFFT)])