UNSPECIFIED (1991) SPEECH SCRAMBLING EMPLOYING ADAPTIVE RATE SAMPLING. ELECTRONICS LETTERS, 27 (12). pp. 1076-1078. ISSN 0013-5194

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Abstract

A new speech scrambling technique is described. The speech is spectrally scrambled at the transmitter to produce a defined multiple bandpass structure. The reconstruction 'key' comprises a knowledge of the spectral frequency bands of the scrambled elements together with a unique sampling rate which will allow correct recombination of these elements. To prevent unauthorised reconstruction, the bandpass structure and sampling rate can be changed irregularly according to an appropriate key sequence.

Item Type:	Journal Article
Subjects:	T Technology > TK Electrical engineering. Electronics Nuclear engineering
Journal or Publication Title:	ELECTRONICS LETTERS
Publisher:	IEE-INST ELEC ENG
ISSN:	0013-5194
Date:	6 June 1991
Volume:	27
Number:	12
Number of Pages:	3
Page Range:	pp. 1076-1078
Publication Status:	Published
URI:	http://wrap.warwick.ac.uk/id/eprint/22650

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