 Hi everybody, my name is Mauro Scanduzzo, I'm a Field Application Engineer for ST Micro-Electronic and I cover the ST sensors. What are we going to present to you today is a development board, actually a demo, using an analog microphone bottom port from ST Micro-Electronic in synergy with our STM32 microcontroller to analyze if this pipe has a potential hole and normally to predict that potential hole in the pipe you need to go to the ultrasound space, how we can do that. Let's test together, just put the microphone close to the pipe. Actually what we're going to see here, the board STM32 is connected to a PC, we have a graphical user interface and we can understand the FFT from 0 to 80 kHz. We see here two spurious frequencies, one around 37.8 kHz and another with 60 kHz. So it means that actually there is a generation on the ultrasound space of a spurious frequency so we can predict that bad behavior of the pipe and substitute the pipe. Just using an analog microphone from ST Micro-Electronic fully differential in synergy with an STM32 nuclear board, process the data on the STM32 level and just display with a graphical user interface. Thank you for your attention.