To download mp3 (audio): Click "Download mp3" button
To Cut/Crop mp3: Please use the slider below and click on "Download mp3" button to download the selected part.
Note that video to mp3 conversion output is limited to 10 minutes.
How to make "Stereo Super Ears" to allow you to hear very faint noises that you would normally not be able to hear. This device uses an op-amp to amplify a stereo signal from 2 electret microphones. This makes a great beginner electronics project.