[Hilo] single ended microphone Vs. differential ended microp


#1

[Hilo] Is single ended microphone efficient as differential one?

Answer: The single input microphone can be as efficient as a differential one if the audio function is designed following the rules to avoid the TDMA noise. The key points are to have a local cleaned GND and a microphone line surrounded by GND all along the path between the microphone and the module input. The digital internal gain and filters in the module insure to have the required signal amplitude.