[This is my first post here. I haven't had time to introduce myself yet. My apologies if I'm just saying something everyone already knows.]
> On Feb 24, 2019, at 9:33 AM, Paul Andrews <judge2...@gmail.com> wrote: > > With no dimming/fading there are noticeable peaks at 4KHz, 8KHz and 12KHz, > 12KHz is the upper limit of the frequency scale I was using). Try sweeping the frequency instead of the duty cycle to see how the volume (and spectrum) of the sound changes. As already suggested, hooking a microphone or piezo transducer up to a spectrum analyzer or even just an oscilloscope would be enlightening. [Proper introduction to come...] Terry Bowman, KA4HJH "The Mac Doctor" -- You received this message because you are subscribed to the Google Groups "neonixie-l" group. To unsubscribe from this group and stop receiving emails from it, send an email to neonixie-l+unsubscr...@googlegroups.com. To post to this group, send an email to neonixie-l@googlegroups.com. To view this discussion on the web, visit https://groups.google.com/d/msgid/neonixie-l/88AA2D17-37C4-4450-8F63-EC5C0F0E7E13%40gmail.com. For more options, visit https://groups.google.com/d/optout.
