Verification of recorded messages

Details Verification of recorded messages Verification of recorded messages

G - Physics

11

B

352/19.6

G11B 20/18 (2006.01) G11B 20/00 (2006.01) G11B 20/02 (2006.01) G11B 23/28 (2006.01) G11B 27/30 (2006.01)

Patent

CA 1191603

ABSTRACT The invention provides for the recording of an audio message and subsequent playback thereof and includes a facility for establishing whether the playback message is an authentic reproduction of the original message. The facility is obtained by producing a first data signal indicative of the audio message and recording it together with the audio message and producing a second data signal indicative of the playback message, and comparing the first and the second data signals to establish that the playback is an authentic reproduction of the original message parity exists between the data signals.

392405

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