DE-4013 Voice-Matic Microphone Mixing System by Industrial Research Products, Inc. |
1628A Automatic Microphone Mixer by Altec Sound Products. |
Eleven-Day Sound System for 325,000 People Robert F. Ancha Sep. 1972. |
"Invisible Sound Reinforcement With 350 Microphones" by Peter W. Tappan and Robert F. Ancha Oct. 1969. |
Acoustical Treatment and Sound Reinforcing System for Washington State Legislature by Herbert T. Chaudiere Dec. 1970. |
Audio Facilities for the Audio Engineering Society Conventions by Irving L. Joel, Keith A. Morris and Hugh N. Russell. |