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- AES 2016 Election Results Announced
- The AES has released the list of winning candidates from the balloting in the 2016 Audio Engineering Society international elections
- AES Opens Early Registration & Housing Options for AES Los Angeles, September 29 — October 2
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- Research Finds Audible Differences with High-Resolution Audio
- Listeners can hear a difference between standard audio and better-than-CD quality, known as high-resolution audio
- AES Conference on Audio for Virtual and Augmented Reality Announces Program Details
- New Conference focusses on AR/VR creative process, applications workflow and product development
The research paper in 1925 by Chester W. Rice and Edward W. Kellogg at General Electric was important in establishing the basic principle of the direct-radiator loudspeaker with a small coil-driven mass-controlled diaphragm in a baffle with a broad midfrequency range of uniform response. Edward Wente at Bell Labs had independently discovered this same principle, filed patent No. 1,812,389 Apr. 1, 1925, granted June 30, 1931. The Rice-Kellogg paper also published an amplifier design that was important in boosting the power transmitted to loudspeakers. In 1926, RCA used this design in the Radiola line of a.c. powered radios.
- Rice, Chester W. and Edward W. Kellogg, "Notes on the Development of a New Type of Hornless Loudspeaker," Transactions of the American Institute of Electrical Engineers 44, 1925, p. 461-475
- 2001 by Steven E. Schoenherr. All rights reserved.
Return to Recording Technology History Notes | Loudspeaker History | this page revised Jan. 25, 2001