2015
DOI: 10.1049/iet-spr.2013.0399
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Wavelet‐domain audio watermarking using optimal modification on low‐frequency amplitude

Abstract: On the basis of the Karush-Kuhn-Tucker (KKT) theorem, a novel digital audio watermarking scheme is proposed. To guarantee the robustness of a watermark, this scheme embeds information into low-frequency coefficients of audio's discrete wavelet transform. For the modification of low-frequency amplitude, this study uses the KKT theorem to minimise the difference between the original and the watermarked coefficients. Accordingly, embedding strength is increased to enhance the most robustness of a watermarked audi… Show more

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Cited by 29 publications
(16 citation statements)
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“…Wavelet is a domain of a signal obtained by using a function of ) (x ψ . This function can generate values from the signal samples in the wavelet domain by scaling and shifting related parameters [5]. Signals that have been transformed to the wavelet domain will be divided into two new signals, ie signals at high frequencies and at low frequencies [6].…”
Section: B Wavelet Domainmentioning
confidence: 99%
See 1 more Smart Citation
“…Wavelet is a domain of a signal obtained by using a function of ) (x ψ . This function can generate values from the signal samples in the wavelet domain by scaling and shifting related parameters [5]. Signals that have been transformed to the wavelet domain will be divided into two new signals, ie signals at high frequencies and at low frequencies [6].…”
Section: B Wavelet Domainmentioning
confidence: 99%
“…Some research in audio watermarking has been conducted in various methods, such as time domain method audio watermarking [2], temporal domain [3], DCT domain [4], DWT domain [5][6][7][8], combination of DWT and SVD method [6][7]13], BCH code [9,13], and SVD method [10][11][12].…”
Section: Introductionmentioning
confidence: 99%
“…An audio watermarking system usually consists of the embedding and extraction processes and satisfies three minimum requirements of audio watermarking standards set by the International Federation of Phonographic Industry (IFPI) requirements. According to the IFPI recommendation, every audio watermarking algorithm is set to meet the following specifications [1–10]: (i) audio watermark should be imperceptible of the original signal; (ii) signal‐to‐noise ratio (SNR) needs to be >20 dB and the embedding capacity should be >20 bits per second (bps); and (iii) watermark should be capable of resisting common attacks and audio processing operations.…”
Section: Introductionmentioning
confidence: 99%
“…Several methods proposed previously involved in inserting watermarks in the time domain [11–21] or frequency domain [3–10, 22–25]. In this study, we focus on the frequency domain especially the wavelet domain.…”
Section: Introductionmentioning
confidence: 99%
“…Their algorithm is demonstrated to be robust against echo and noise addition, filtering, and compression, without significant perceptual distortion. Chen and others have presented an optimization‐based audio watermarking algorithm where embedding is achieved using the seventh level of discrete wavelet transform. The perceptual transparency and robustness of their algorithm have been evaluated at 1,000 bps and 2,000 bps.…”
Section: Introductionmentioning
confidence: 99%