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翻訳と辞書　辞書検索 [ 開発暫定版 ] スポンサード リンク April 1943 ： ウィキペディア英語版 April 1943 The following events occurred in April 1943: ==April 1, 1943 (Thursday)== *SIGSALY, referred to as the X System vocoder or "Green Hornet", went into operation for use in secure phone conversations between U.S. President Roosevelt and U.K. Prime Minister Churchill. The new system, developed by AT&T's Bell Labs, encrypted speech into electronic signals that could be transmitted at the rate of 1,551 bits per second, and decrypted it at the other end, permitting the two wartime leaders to talk to each other without being understood by wiretappers.〔Manfred R. Schroeder, ''Computer Speech: Recognition, Compression, Synthesis'' (Springer, 2004) p108〕 The terminals for transatlantic calls were at The Pentagon in Washington, D.C. and in the basement of Selfridges department store in London. 抄文引用元・出典: フリー百科事典『 ウィキペディア（Wikipedia）』 ■ウィキペディアで「April 1943」の詳細全文を読む スポンサード リンク 翻訳と辞書 : 翻訳のためのインターネットリソース Copyright(C) kotoba.ne.jp 1997-2016. All Rights Reserved.