1 a wasting away of the body, as from poor nutrition, nerve damage, or disuse. 2  to undergo atrophy; wither; degenerate:His crippled leg began to atrophy with no exercise. 3  to become weakened; decline:Industry atrophied in bad economic times.
Voice Amplifiers / Long Range Listening Devices. Listening devices can be utilized for a variety of purposes including listening through a wall, listening from a distance or enjoying your favorite animals in the wild. More complex systems contain an audio transmitter and receiver.
A Bluetooth audio receiver does provide a way to wirelessly stream music from a portable media player to a home audio system. But for iOS device users, AirPlay offers a better experience. Designed by Apple specifically to enable wireless streaming for Apple multimedia devices, AirPlay provides you: Crystal clear sound.