Carpal Tunnel Syndrome Symptoms & Signs. Carpal tunnel syndrome arises from compression of the median nerve that supplies the hand. Symptoms begin with numbness and/or tingling of the hand in the distribution of this nerve (the thumb, index, middle, and thumb side of the ring fingers).
An Condenser microphone is a type of microphone that consists of a pair of charged plates that can be forced closer or further apart by variations in pressure. In effect, the plates act like a sound-sensitive capacitor.
The 640A/AA condenser mic came about from Western Electricâs need for a reliable calibration mic and the conclusion that the 394 condenser was too big and bulky to do the job. In 1932, a miniature condenser microphone system with a one-inch diaphragm called the D96436 was successfully tested and re-designated the 640A.