172342 ⎘
Direction-finders for determining the direction from which infrasonic, sonic, ultrasonic, or electromagnetic waves, or particle emission, not having a directional significance, are being received using ultrasonic, sonic or infrasonic waves; Systems for determining direction or deviation from predetermined direction using amplitude comparison of signals derived from receiving transducers or transducer systems having differently-oriented directivity characteristics wherein the signals are derived sequentially
ELECTRONIC DEVICE AND OPERATION MODE SWITCHING METHOD THEREOF
#2Emergency vehicle detection
#3SINGLE ANTENNA DIRECTION FINDING AND LOCALIZATION
#4Ultrasonic measurement device and measurement method
#5Wireless transmitting/receiving system, wireless receiving device and wireless transmitting/receiving method
#6System and method for noise detection
#7System and method for noise detection
#8System for localizing sound source and the method therefor