Changes

Line 520: Line 520:     
http://www.youtube.com/embed/l3vKVTW1LQA
 
http://www.youtube.com/embed/l3vKVTW1LQA
 +
 +
One laptop running Turtleart is used to generate a 3kHz audio tone. The second laptop, XO-1.5 or higher, graphs the output of 2 microphones with Measure. If the 2 microphones are at equal distance from the source then the 2 traces are in phase. Move one microphone by half a wavelength and the 2 traces are opposite phase.
 +
 +
This experiment is best with a XO-1.5 or higher with stereo input. If you only have a mono XO-1 then you could parallel the 2 microphones to the mono input and see how the amplitude of the summed signal changes as you move one microphone
    
===Gliding tone===
 
===Gliding tone===
2,486

edits