AES E-Library

-Invisible- Sound Reinforcement with 350 Microphones

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.

Authors: Tappan, Peter W.; Ancha, Robert F.
Affiliation: Bolt Beranek and Newman Inc., Downers Grove, IL : Ancha Electronics, Inc., Chicago, IL
AES Convention:37 (October 1969) Paper Number:695 Import into BibTeX

Click to purchase paper or login as an AES member. If your company or school subscribes to the E-Library then switch to the institutional version. If you are not an AES member and would like to subscribe to the E-Library then Join the AES!

This paper costs $20 for non-members, $5 for AES members and is free for E-Library subscribers.

Learn more about the AES E-Library

E-Library Location: (CD aes8)   /pp6975/pp6910/0660.pdf

Start a discussion about this paper!