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The sensitivity of synchronization to parameter mismatch is discussed for the security in communication. For the mismatch of parameters or keys, the probability of decoding the message through guessing the keys is below 2<jats:sup>-200<\/jats:sup>. The scheme of truncated chaotic synchronization has strong security in encoding message.<\/jats:p>","DOI":"10.1142\/s0218127403006844","type":"journal-article","created":{"date-parts":[[2003,4,8]],"date-time":"2003-04-08T11:12:24Z","timestamp":1049800344000},"page":"691-701","source":"Crossref","is-referenced-by-count":1,"title":["DIGITAL SPEECH COMMUNICATION BY TRUNCATED CHAOTIC SYNCHRONIZATION"],"prefix":"10.1142","volume":"13","author":[{"given":"Y.","family":"ZHANG","sequence":"first","affiliation":[{"name":"Institute of Acoustics, State Key Laboratory of Modern Acoustics, Nanjing University, Nanjing 210093, P.R. China"},{"name":"Department of Surgery, Division of Otolaryngology Head and Neck Surgery, University of Wisconsin Medical School, Madison, WI 53792-7375, USA"}]},{"given":"G. H.","family":"DU","sequence":"additional","affiliation":[{"name":"Institute of Acoustics, State Key Laboratory of Modern Acoustics, Nanjing University, Nanjing 210093, P.R. China"}]},{"given":"Y. M.","family":"HUA","sequence":"additional","affiliation":[{"name":"Institute of Acoustics, State Key Laboratory of Modern Acoustics, Nanjing University, Nanjing 210093, P.R. China"}]},{"given":"J. J.","family":"JIANG","sequence":"additional","affiliation":[{"name":"Institute of Acoustics, State Key Laboratory of Modern Acoustics, Nanjing University, Nanjing 210093, P.R. China"},{"name":"Department of Surgery, Division of Otolaryngology Head and Neck Surgery, University of Wisconsin Medical School, Madison, WI 53792-7375, USA"}]}],"member":"219","published-online":{"date-parts":[[2011,11,20]]},"reference":[{"key":"rf1","doi-asserted-by":"publisher","DOI":"10.1103\/PhysRevLett.71.65"},{"key":"rf2","doi-asserted-by":"publisher","DOI":"10.1049\/el:19980657"},{"key":"rf3","first-page":"S304","volume":"8","author":"Dai M.","journal-title":"Acta Phys. Sin-Ov. Ed."},{"key":"rf4","first-page":"29","volume":"20","author":"Deng H.","journal-title":"J. China Inst. Commun."},{"key":"rf5","doi-asserted-by":"publisher","DOI":"10.1103\/PhysRevLett.59.845"},{"key":"rf6","doi-asserted-by":"publisher","DOI":"10.1016\/0167-2789(83)90298-1"},{"key":"rf7","doi-asserted-by":"publisher","DOI":"10.1103\/PhysRevA.46.7387"},{"key":"rf8","doi-asserted-by":"crossref","first-page":"53","DOI":"10.1007\/BF00045125","volume":"7","author":"Herzel H.","journal-title":"Nonlin. 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