I don't see what you narrowed it down too. Was it from switching the audio path? Was it the generated waveform? Was an offset in the waveform? Was it the external circuit? Did you change from the default CODEC bias? Did you get a startup glitch from turning on an amplifier? Did you forget to soft switch the CODEC? Was it digital crosstalk from the data path? I can go on.
Drones are, in essence, flying autonomous vehicles. Pros and cons surrounding drones today might well foreshadow the debate over the development of self-driving cars. In the context of a strongly regulated aviation industry, "self-flying" drones pose a fresh challenge. How safe is it to fly drones in different environments? Should drones be required for visual line of sight – as are piloted airplanes? Join EE Times' Junko Yoshida as she moderates a panel of drone experts.