Dear all, I have a project which based on Teensy 3.2 and the Audio Board. Mainly this project is used to create a waveform analogue signal that has 1 Hz frequency. The waveform can be square or sawtooth. I have seen the tutorial code and the video, it can produce audible sound, which I dont know it can be applied for this infrasound case? I would be appreciate if you guys can suggest me any aproach. By the way, googling for very low freq signal shown me about anti alias thing, is that nessesary?