The use of bluetooth tour guide system can effectively allocate human resources.       Due to the limited personnel, especially the fore...

 Audio Equipment difference between Analog And Digital Signals An analog signal is a constantly changing physical quantity representation of a signal a...

 Audio Equipment difference between Analog And Digital Signals An analog signal is a constantly changing physical quantity representation of a signal a...

 The voice explanation of the scenic spot is actually a player, it is a player that people record various languages and repeat the content for many times.With the imp...

 Digital audio wireless tour guide system 1) Digital audio wireless tour guide system provide better explanation and guide services for tourists.Well-trained ...