Professional Line Output Level Electret Microphone for Public-Address Use

Várszegi EI, Smallenberg WAL. Professional Line Output Level Electret Microphone for Public-Address Use. In: AES Convention 62. Audio Engineering Society; 1979.pp. 1455:1-14. Available from: https://aes.org/publications/elibrary-page/?id=2899

@inproceedings{Varszegi1979_2899,
  author = {Várszegi, E. I. and Smallenberg, W. A. L.},
  title = {{Professional Line Output Level Electret Microphone for Public-Address Use}},
  booktitle = {AES Convention 62},
  pages = {1455:1-14},
  url = {https://aes.org/publications/elibrary-page/?id=2899},
  year = {1979},
  month = mar,
  publisher = {Audio Engineering Society}
}

TY  - CPAPER
TI  - Professional Line Output Level Electret Microphone for Public-Address Use
AU  - Várszegi, E. I.
AU  - Smallenberg, W. A. L.
T2  - AES Convention 62
SP  - 1
EP  - 14
M1  - Paper 1455
PY  - 1979
DA  - 1979/03/06
UR  - https://aes.org/publications/elibrary-page/?id=2899
PB  - Audio Engineering Society
LA  - en
AB  - The electret technology has already been described in several papers. This paper will show how an electronic symmetrical line output level electret microphone can be designed for public-address use. Because of the small dimensions of an electret unidirectional microphone insert the proper acoustical parameters, such as suitable frequency-response and constant front-to-random index throughout the useful frequency band, can easily be obtained. Application of recently available electronic circuitry and components in the built-in line-output level amplifier and limiter enable transmission over unscreened cable up to 1 km length. This microphone is compatible with any moving-coil or other electret microphone. Because of the integration of transducer and electronics, an excellent S/N ratio can be obtained. Th'power for the electronics being supplied over separate wires by the power amplifier the microphone requires no built-in batteries. Its line amplifier can drive either a power amplifier up to rated output or a 600 Ohm line. The philosophy of this design will be explained in this paper.
ER  -