start

2019-10-12 11:36:30 +03:00
parent e9d12a7eb4
commit 2370426916
8 changed files with 374 additions and 29 deletions
@@ -0,0 +1,16 @@
+f = 4000; 
+fs = 22050; 
+fftLength=1024;             %windowlength 
+x =sin(2*pi*f*[0:1/fs:1]);  %makethesinewave 
+ft =fft(x,fftLength);       %doFFT,userect.window 
+ftMag=abs(ft);              %computemagnitude 
+
+% plot the results both in linear and dB magnitudes 
+
+subplot(2, 1, 1), plot(ftMag) 
+title('Linear Magnitude') 
+ylabel('magnitude'), xlabel('bins') 
+
+subplot(2, 1, 2), plot(20*log10(ftMag)) 
+title('dB Magnitude') 
+ylabel('dB'), xlabel('bins')