Research output: Contribution to Journal/Magazine › Journal article › peer-review
Research output: Contribution to Journal/Magazine › Journal article › peer-review
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TY - JOUR
T1 - Speech scrambling employing adaptive rate sampling
AU - Darnell, M.
AU - He, W.
AU - Honary, Bahram
PY - 1991
Y1 - 1991
N2 - 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.
AB - 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.
KW - speech analysis and processing
KW - signal processing
U2 - 10.1049/el:19910668
DO - 10.1049/el:19910668
M3 - Journal article
VL - 27
SP - 1076
EP - 1078
JO - Electronics Letters
JF - Electronics Letters
SN - 0013-5194
IS - 12
ER -