Efficient scrambling techniques for speech signals/

Geahča maid

• Speech scrambling by the re-ordering of amplitude samples/
  Dahkki: 333795 Philips V. J., et al.
• Analog signal encryption : scrambling versus digitization /
  Dahkki: 180300 Gersho, Allen
• A new speech signal scrambling method for mobile radio applications /
  Dahkki: Del Re, Enrico
• Voice scrambling /
  Dahkki: 289301 Nai, Choon Siang
  Almmustuhtton: (1999)
• Measuring security in analog speech communications security devices /
  Dahkki: 441017 McCalmont, Arnold M.