This forum uses cookies
This forum makes use of cookies to store your login information if you are registered, and your last visit if you are not. Cookies are small text documents stored on your computer; the cookies set by this forum can only be used on this website and pose no security risk. Cookies on this forum also track the specific topics you have read and when you last read them. Please confirm whether you accept or reject these cookies being set.

A cookie will be stored in your browser regardless of choice to prevent you being asked this question again. You will be able to change your cookie settings at any time using the link in the footer.

Audio based tachometer
I just got finished adapting the default "Audio Spectrum" experiment to be able to measure the RPM of spinning objects that have a fix number of distinct sound pulses per revolution, such as the classic playing card in the spokes if a bicycle wheel. The number of pulses per revolution is adjustable in the experiment. I didn't change to much from the source, other than removing the bit about music notes. At first I tried to base this off of the Audio auto-correlation experiment, however that didn't work as well in my testing.

Forum Jump: