Abstract
This paper deals with the theory and design of magnetic inertia throat microphones. Especial attention is given to the treatment of sound power and high articulation throat microphones. The sound power microphones described contain a double frequency, undamped vibrating system, while the high articulation microphones have damping introduced, which reduces the low frequency peak with resultant increase in articulation. Wide range frequency response is obtained from the neighborhood of 100 cycles, extending up to 3,000, 4,000, or 5,000 cycles, as may be desired. These microphones have a band pass filter character with a sharp high frequency cutoff. This cutoff is desirable in order to cut out high frequency noises.
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