Your Headphones Could Be Used to Measure Your Pulse
29th October 2013
If, of course, that’s what you want to do.
As your arteries pump blood, it causes tiny movements in your eardrum at a frequency of about 1Hz. Using the earphones’ speaker as a microphone, the software can detect and interpret this movement to determine your pulse rate.
October 29th, 2013 at 09:48
An answer in search of an issue.