UselessPickles
Active Member
Hmm... I just thought of a potentially relevant difference between my waveform generator testing and actual audio output: my waveform generator is very limited on how far the signal can be offset in the negative direction, so I was testing with a signal that never went negative, while still grounding the second wire. So my signal was swinging from 0V - 0.5V when the handset was behaving well, and I encountered the strange behavior after the signal started exceeding 0.5V max.
With the actual audio produced by my MCU/circuit, it swings +/- around 0V, so if I doubled the voltage to be 1V peak-peak for volume compensation, it still wouldn't exceed +0.5V (but would also swing down to -0.5V).
I have no idea whether this is actually a relevant difference or not that would make it "safer" for me to double my signal voltage.
With the actual audio produced by my MCU/circuit, it swings +/- around 0V, so if I doubled the voltage to be 1V peak-peak for volume compensation, it still wouldn't exceed +0.5V (but would also swing down to -0.5V).
I have no idea whether this is actually a relevant difference or not that would make it "safer" for me to double my signal voltage.