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Design of a Studio-Quality Condenser Microphone Using Electret Technology

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The performance requirements of a studio-quality condenser microphone are reviewed in light of present recording, broadcast, and sound reinforcement practice. Consideration is given to both electroacoustical performance and environmental stability. A condenser transducer is described which makes use of refined electret technology and demonstrates performance advantages over similar conventional, externally biased configurations. The details of a new RLC -lossy ladder- acoustical phase shift network are presented in basic terms as applied to the design of a cardioid unidirectional microphone. Finally a unique impedance conversion electronics section is described in terms of noise level, load driving capability, distortion, and environmental stability.

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JAES Volume 26 Issue 12 pp. 947-957; December 1978
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Permalink: http://www.aes.org/e-lib/browse.cfm?elib=3230

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