WO2002103695A3 - Vorrichtung und verfahren zum einbetten eines wasserzeichens in ein audiosignal - Google Patents

Vorrichtung und verfahren zum einbetten eines wasserzeichens in ein audiosignal Download PDF

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Publication number
WO2002103695A3
WO2002103695A3 PCT/EP2002/005173 EP0205173W WO02103695A3 WO 2002103695 A3 WO2002103695 A3 WO 2002103695A3 EP 0205173 W EP0205173 W EP 0205173W WO 02103695 A3 WO02103695 A3 WO 02103695A3
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WO
WIPO (PCT)
Prior art keywords
watermark
audio signal
spectral representation
signal
initial value
Prior art date
Application number
PCT/EP2002/005173
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English (en)
French (fr)
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WO2002103695A2 (de
Inventor
Juergen Herre
Ralph Kulessa
Christian Neubauer
Frank Siebenhaar
Original Assignee
Fraunhofer Ges Forschung
Juergen Herre
Ralph Kulessa
Christian Neubauer
Frank Siebenhaar
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
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Publication date
Application filed by Fraunhofer Ges Forschung, Juergen Herre, Ralph Kulessa, Christian Neubauer, Frank Siebenhaar filed Critical Fraunhofer Ges Forschung
Priority to EP02740586A priority Critical patent/EP1382038B1/de
Priority to US10/481,860 priority patent/US7346514B2/en
Priority to DE50203511T priority patent/DE50203511D1/de
Priority to AT02740586T priority patent/ATE298921T1/de
Publication of WO2002103695A2 publication Critical patent/WO2002103695A2/de
Publication of WO2002103695A3 publication Critical patent/WO2002103695A3/de

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    • G—PHYSICS
    • G10—MUSICAL INSTRUMENTS; ACOUSTICS
    • G10L—SPEECH ANALYSIS OR SYNTHESIS; SPEECH RECOGNITION; SPEECH OR VOICE PROCESSING; SPEECH OR AUDIO CODING OR DECODING
    • G10L19/00—Speech or audio signals analysis-synthesis techniques for redundancy reduction, e.g. in vocoders; Coding or decoding of speech or audio signals, using source filter models or psychoacoustic analysis
    • G10L19/018—Audio watermarking, i.e. embedding inaudible data in the audio signal
    • G—PHYSICS
    • G10—MUSICAL INSTRUMENTS; ACOUSTICS
    • G10L—SPEECH ANALYSIS OR SYNTHESIS; SPEECH RECOGNITION; SPEECH OR VOICE PROCESSING; SPEECH OR AUDIO CODING OR DECODING
    • G10L19/00—Speech or audio signals analysis-synthesis techniques for redundancy reduction, e.g. in vocoders; Coding or decoding of speech or audio signals, using source filter models or psychoacoustic analysis
    • G10L19/02—Speech or audio signals analysis-synthesis techniques for redundancy reduction, e.g. in vocoders; Coding or decoding of speech or audio signals, using source filter models or psychoacoustic analysis using spectral analysis, e.g. transform vocoders or subband vocoders

Abstract

Zum Einbetten eines Wasserzeichens in ein Audiosignal wer-den zunächst eine spektrale Darstellung des Audiosignals und eine spektrale Darstellung des Wasserzeichensignals er-mittelt (14, 16). Hierauf wird die spektrale Darstellung des Wasserzeichensignals abhängig von einer psychoakustischen Maskierungsschwelle (24) des Audiosignals verarbeitet (22). Das verarbeitete Wasserzeichensignal wird mit dem Audiosignal kombiniert (18). Die Verarbeitung der spektralen Darstellung des Wasserzeichensignals wird iterativ durchgeführt, indem zunächst ein vorbestimmter Wasserzeichen-Startwert (26) gewählt wird, die durch den vorbestimmten Wasserzeichen-Startwert in die spektrale Darstellung des Audiosignals nach einer Quantisierung der spektralen Darstellung des Audiosignals eingeführte Störung ermittelt wird (28), und dann der Wasserzeichen-Startwert so in die spektrale Darstellung des Audiosignals nach der Quantisierung eingeführte Störung kleiner oder gleich der vorbestimmten Störungsschwelle (32) ist.
PCT/EP2002/005173 2001-06-18 2002-05-10 Vorrichtung und verfahren zum einbetten eines wasserzeichens in ein audiosignal WO2002103695A2 (de)

Priority Applications (4)

Application Number Priority Date Filing Date Title
EP02740586A EP1382038B1 (de) 2001-06-18 2002-05-10 Vorrichtung und verfahren zum einbetten eines wasserzeichens in ein audiosignal
US10/481,860 US7346514B2 (en) 2001-06-18 2002-05-10 Device and method for embedding a watermark in an audio signal
DE50203511T DE50203511D1 (de) 2001-06-18 2002-05-10 Vorrichtung und verfahren zum einbetten eines wasserzeichens in ein audiosignal
AT02740586T ATE298921T1 (de) 2001-06-18 2002-05-10 Vorrichtung und verfahren zum einbetten eines wasserzeichens in ein audiosignal

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE10129239A DE10129239C1 (de) 2001-06-18 2001-06-18 Vorrichtung und Verfahren zum Einbetten eines Wasserzeichens in ein Audiosignal
DE10129239.2 2001-06-18

Publications (2)

Publication Number Publication Date
WO2002103695A2 WO2002103695A2 (de) 2002-12-27
WO2002103695A3 true WO2002103695A3 (de) 2003-05-22

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PCT/EP2002/005173 WO2002103695A2 (de) 2001-06-18 2002-05-10 Vorrichtung und verfahren zum einbetten eines wasserzeichens in ein audiosignal

Country Status (5)

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US (1) US7346514B2 (de)
EP (1) EP1382038B1 (de)
AT (1) ATE298921T1 (de)
DE (2) DE10129239C1 (de)
WO (1) WO2002103695A2 (de)

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Also Published As

Publication number Publication date
DE50203511D1 (de) 2005-08-04
US20040184369A1 (en) 2004-09-23
DE10129239C1 (de) 2002-10-31
EP1382038B1 (de) 2005-06-29
WO2002103695A2 (de) 2002-12-27
EP1382038A2 (de) 2004-01-21
US7346514B2 (en) 2008-03-18
ATE298921T1 (de) 2005-07-15

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