-Invisible- Sound Reinforcement with 350 Microphones

Tappan PW, Ancha RF. -Invisible- Sound Reinforcement with 350 Microphones. In: AES Convention 37. Audio Engineering Society; 1969. Paper 695. Available from: https://aes.org/publications/elibrary-page/?id=1317

@inproceedings{Tappan1969_1317,
  author = {Tappan, Peter W. and Ancha, Robert F.},
  title = {{-Invisible- Sound Reinforcement with 350 Microphones}},
  booktitle = {AES Convention 37},
  note = {Paper 695},
  year = {1969},
  month = oct,
  publisher = {Audio Engineering Society},
  url = {https://aes.org/publications/elibrary-page/?id=1317}
}

TY  - CPAPER
TI  - -Invisible- Sound Reinforcement with 350 Microphones
AU  - Tappan, Peter W.
AU  - Ancha, Robert F.
T2  - AES Convention 37
M1  - Paper 695
PY  - 1969
DA  - 1969/10/06
UR  - https://aes.org/publications/elibrary-page/?id=1317
PB  - Audio Engineering Society
LA  - en
AB  - The sound system in the new Seventeenth Church of Christ, Scientist in Chicago, reinforces speech from any of the 764 seats, using several of the 350 concealed microphones. Signals to the 350 concealed loudspeakers are delayed to prevent pre-echo. A non-technical operator controls the system easily via display circuits and semi-automatic switching of microphones and loudspeakers.
ER  -