172348 ⎘
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 adjustment of real or effective orientation of directivity characteristics of a transducer or transducer system to give a desired condition of signal derived from that transducer or transducer system, e.g. to give a maximum or minimum signal the desired condition being maintained automatically
Method for determining a time delay for time delay compensation
#2Method to operate a hearing device and arrangement with a hearing device
#3Direction detection apparatus, direction detection method and direction detection program, and direction control apparatus, direction control method, and direction control program