This is an educational tool for sound frequencies that allows a person to 'learn' the sounds generated at a selected frequency. You can adjust the length of each frequency as well as the frequency range in Hz. Tap the button to start the oscillator. The wave frequency is from http://beej.us/blog/data/digital-sound/maketone_c.txt
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(c)1998-2013 Vincent Collura ( Inventor / Engineer )