Hi, just started with my first ardiuno leonardo to create a tone generator that sweeps from 20khz to 25khz. When doing this, I get some popping and static. Is there something I can do to fix it? Would using a sound shield and playing a wav file of these tones get better results? Thanks for any sugge…

Ultrasonic tones generate audible static

system January 30, 2014, 5:31pm 7

Thanks CrossRoads, I hope to play with the code tonight. I am not exactly sure what the PIND statement does yet, so I'll have to do some reading.

Thanks for the examples.

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