Method and apparatus for providing information about the source of a sound via an audio device
ACOUSTIC ELEVATOR COMMUNICATION SYSTEM AND METHOD OF ADJUSTING SUCH A SYSTEM
Verfahren und Vorrichtung zur Anpassung einer Audioausgabe an den Nutzer eines Fahrzeugs
Patrol vehicle communications system for users of both mobile and portable radios
System and method for digital signal processing in deep diving environment
Vehicular audio processing unit and communication system including same
Receive attenuation system for trainline communication networks