異步模-數(shù)-模語音加密中的偽頻插入置亂方法
A DUMMY SPECTRUM INSERTION ENCRYPTION METHOD USED IN ASYNCHRONOUS SPEECH SCRAMBLER
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摘要: 本文在L.s.Lee(1984,1986)異少模-數(shù)-模語音加密方案的基礎上提出了自適應偽頻插入置亂方法。這種方法有利于降低密話節(jié)奏感,提高異步加密方案的保密性,且可保證良好的恢復話音質量。Abstract: An adaptive dummy spectrum insertion method which can be applied to L. S. Lee s asynchronous speech scrambler is presented. It is concluded that the method shows high-level security and good voice quality.
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L.S.Lee et al.,IEEE Trans.onCOM,COM-32 (1984)4,444-456.[2]L.S.Lee et al.,IEEE J.of SAC., SAC-4(1986)2,280-287.[3]張海林,王育民,胡征,電子學報,19(1991)4,35-39.[4]張海林,模-數(shù)-模語音加密的理論與實現(xiàn),西安電子科技大學博士學位論文,西安,1991年.[5]Akira, Matsunaga, IEEE J. of SAC., SAC-7 (1989)4, 540-547.[6]L. R. Rabiner, R. W. Schafer, Digital Processing of Speech Signals, Prentice-Hall. Inc. New York, (1978). -
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