Bruce Goldburg, Ed Dawson, S. Sridharan. A Secure Analog Speech Scrambler Using the Discrete Cosine Transform. In Hideki Imai, Ronald L. Rivest, Tsutomu Matsumoto, editors, Advances in Cryptology - ASIACRYPT 91, International Conference on the Theory and Applications of Cryptology, Fujiyoshida, Japan, November 11-14, 1991, Proceedings. Volume 739 of Lecture Notes in Computer Science, pages 299-311, Springer, 1991.
Abstract is missing.