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b10-1. 雑誌掲載論文 >
このアイテムの引用には次の識別子を使用してください:
http://hdl.handle.net/10119/12890
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| タイトル: | Study on scramble method for speech signal by using random-bit shift of quantization |
| 著者: | Zhu, Zhi
Yamamoto, Katsuhiko
Unoki, Masashi
Aoki, Naofumi |
| キーワード: | speech scramble
random bit shift
PCM speech signal
secure voice |
| 発行日: | 2014 |
| 出版者: | 信号処理学会 |
| 誌名: | Journal of Signal Processing |
| 巻: | 18 |
| 号: | 6 |
| 開始ページ: | 303 |
| 終了ページ: | 307 |
| DOI: | 10.2299/jsp.18.303 |
| 抄録: | Speech scrambling aims to eliminate intelligibility of original speech in order to preventing eavesdropping and copyright infringement. There is, however, a problem in that completely recovering scrambled speech into the original speech cannot be achieved with conventional methods. In this paper, we propose a speech scrambling method that uses the random-bit-shift of quantization bits with common keys. We evaluated the confidentiality and efficiency of the proposed method by using two objective measures, SER and PESQ. As a result we confirmed that speech signals can be scrambled into completely unintelligible sounds with the proposed method. Moreover, it is possible to restore a scrambled speech signal into the original one completely. In addition, we also confirmed that the scrambled speech signal could not be descrambled correctly with the wrong key. |
| Rights: | Copyright (C) 2014 信号処理学会. Zhi Zhu, Katsuhiko Yamamoto, Masashi Unoki, and Naofumi Aoki, Journal of Signal Processing, 18(6), 2014, 303-307. http://dx.doi.org/10.2299/jsp.18.303 |
| URI: | http://hdl.handle.net/10119/12890 |
| 資料タイプ: | publisher |
| 出現コレクション: | b10-1. 雑誌掲載論文 (Journal Articles)
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このアイテムのファイル:
| ファイル |
記述 |
サイズ | 形式 |
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| 21723.pdf | | 1209Kb | Adobe PDF | 見る/開く |
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