Title :
A new cardioid-line microphone
Author_Institution :
Electro-Voice, Inc., Buchanan, Mich
Abstract :
A new microphone, the Electro-Voice Model 642, is described. Designed particularly for television and motion picture applications where the usable microphone working distance must be a maximum, the model 642 has improved directivity and high sensitivity. The improved directivity is achieved by functioning as a first-order gradient microphone at bass frequencies and as a line microphone at higher frequencies. A detailed description of the directional characteristics is included.
Keywords :
Acoustic transducers; Acoustical engineering; Cardiology; Delay lines; Frequency; Interference; Microphones; Propagation delay; Switches; Voltage;
Journal_Title :
Audio, IRE Transactions on
DOI :
10.1109/TAU.1960.1166286
