Electret Noisecancelling Microphone.
Final rept. 28 Jul 76-28 Dec 77,
J M R SYSTEMS CORP SALEM NH
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This document covers the technical details of advanced development work performed to adapt the electret principle for the purpose of improving noise-cancelling microphones for military use. A major objective was to achieve a flat frequency response over a greater bandwidth and noise cancellation characteristics extending to a higher frequency cut-off point than previously possible with dynamic units. Author
- Electrical and Electronic Equipment
- Electricity and Magnetism