VERIFICATION OF RECORDED MESSAGES

VERIFICATION OF RECORDED MESSAGES

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 m...

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Hauptverfasser: MORGAN, RICHARD B, MCWHIRTER, IAN
Format: Patent
Sprache:eng ; fre
Schlagworte:
INFORMATION STORAGE
INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORDCARRIER AND TRANSDUCER
PHYSICS
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creator MORGAN, RICHARD B
MCWHIRTER, IAN
description 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.
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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.</abstract><edition>4</edition><oa>free_for_read</oa></addata></record>
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subjects INFORMATION STORAGE
INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORDCARRIER AND TRANSDUCER
PHYSICS
title VERIFICATION OF RECORDED MESSAGES
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