Current bulk acoustic microresonators offer improved resolution respect to Quartz Crystal Microbalance and Surface Acoustic Wave devices, but tend to be brittle during operation as sensors or requires ...

Ultrasonic imaging has become a very promising technology, and it has been widely applied in biomedicine, geology, and other fields due to its advantages of safety, nondamaging, and real time.

Audio frequency detection is the process of identifying the pitch or dominant frequency of a sound signal. Three common methods used are Fast Fourier Transform (FFT), AutoCorrelation, and ...