Fast Fourier Transform of sample signal

This is the second addition to my Frequency Detector series of videos. This time I didn't connect it to the home-made radio, instead I connected it to a sine-wave generator (a Wien Bridge oscillator). The generator is made up of an op-amp, 10 K resistors, and 0.22 uF capacitors. So:

frequency = 1/ (2 * pi * 10K * 0.22e-6) = 65 Hz

The output should be 65 Hz. In the video I first had the output disconnected; you could see the Fourier graph flat. Then I connected it to the 65 Hz signal, and you could see a peak at 65 Hz. Yay!
What concerns me is all that noise. You could even see the noise starts to peak in the Fourier graph.

Category:

Science & Technology

Tags:

• FFT
• Fourier
• radio
• Matlab
• opamp
• frequency
• spectrum

[Ondelendo]

Steady I Really Like This Video Fast Fourier Transform of sample signal

[bebeheuy]

Good, I like that you share this video Fast Fourier Transform of sample signal , I wish success always

[willamricard]

Nice Video This is the second addition to my Frequency Detector series of videos. This time I didn't connect it to the home-made radio That You Share , So Very Nice Thanks You

[imegatrone]

I Really Like The Video From Your Fast Fourier Transform of sample signal

[anakmudajaman]

after i watched this video This is the second addition to my Frequency Detector series of videos. This time I didn't connect it to the home-made radio my insight is very open because the video is very good to give information

[zechaco]

can i see the code too pls??

[lolguy00]

may i see the matlab code of this??

[knoocik]

Nice explanation. I was searching for live example of FFT using.

[matbymay]

thats fine but how did you do that, only showing something without reason

[cricketguy69]

this video is the most brilliant and entertaining video on Youtube. There is no reason for all other videos to exist anymore.