Activities/Turtle Art/Using Turtle Art Sensors: Difference between revisions
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===Beat frequency=== | ===Beat frequency=== | ||
A beat is an interference between two sounds of slightly different frequencies, perceived as periodic variations in volume whose rate is the difference between the two frequencies. http://en.wikipedia.org/wiki/Beat_%28acoustics%29 | |||
Three laptops are required. Two emit audio tones of 1000Hz and 1002Hz. The third graphs the sound level its microphone receives. | |||
[[http://en.wikipedia.org/wiki/Beat_%28acoustics%29]] | |||
===Gliding tone=== | ===Gliding tone=== | ||