Robust patchwork-based watermarking method for stereo audio signals
This paper presents a patchwork-based watermarking method for stereo audio signals, which exploits the similarity of the two sound channels of stereo signals. Given a segment of stereo signal, we first compute the discrete Fourier transforms (DFTs) of the two sound channels, which yields two sets of...
| Main Authors: | , , , |
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| Format: | Journal Article |
| Published: |
Springer
2013
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| Subjects: | |
| Online Access: | http://hdl.handle.net/20.500.11937/24447 |
| _version_ | 1848751432115683328 |
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| author | Natgunanathan, I. Xiang, Y. Rong, Yue Peng, D. |
| author_facet | Natgunanathan, I. Xiang, Y. Rong, Yue Peng, D. |
| author_sort | Natgunanathan, I. |
| building | Curtin Institutional Repository |
| collection | Online Access |
| description | This paper presents a patchwork-based watermarking method for stereo audio signals, which exploits the similarity of the two sound channels of stereo signals. Given a segment of stereo signal, we first compute the discrete Fourier transforms (DFTs) of the two sound channels, which yields two sets of DFT coefficients. The DFT coefficients corresponding to certain frequency range are divided into multiple subsegment pairs and a criterion is proposed to select those suitable for watermark embedding. Then a watermark is embedded into the selected subsegment pairs by modifying their DFT coefficients. The exact way of modification is determined by a secret key, the watermark to be embedded, and the DFT coefficients themselves. In the decoding process, the subsegment pairs containing watermarks are identified by another criterion. Then the secret key is used to extract the watermark from the watermarked subsegments. Compared to the existing patchwork methods for audio watermarking, the proposed method does not require knowledge of which segments of the watermarked audio signal contain watermarks and is more robust to conventional attacks. |
| first_indexed | 2025-11-14T07:52:38Z |
| format | Journal Article |
| id | curtin-20.500.11937-24447 |
| institution | Curtin University Malaysia |
| institution_category | Local University |
| last_indexed | 2025-11-14T07:52:38Z |
| publishDate | 2013 |
| publisher | Springer |
| recordtype | eprints |
| repository_type | Digital Repository |
| spelling | curtin-20.500.11937-244472017-09-13T15:10:07Z Robust patchwork-based watermarking method for stereo audio signals Natgunanathan, I. Xiang, Y. Rong, Yue Peng, D. patchwork stereo audio signal audio watermarking discrete Fourier transform This paper presents a patchwork-based watermarking method for stereo audio signals, which exploits the similarity of the two sound channels of stereo signals. Given a segment of stereo signal, we first compute the discrete Fourier transforms (DFTs) of the two sound channels, which yields two sets of DFT coefficients. The DFT coefficients corresponding to certain frequency range are divided into multiple subsegment pairs and a criterion is proposed to select those suitable for watermark embedding. Then a watermark is embedded into the selected subsegment pairs by modifying their DFT coefficients. The exact way of modification is determined by a secret key, the watermark to be embedded, and the DFT coefficients themselves. In the decoding process, the subsegment pairs containing watermarks are identified by another criterion. Then the secret key is used to extract the watermark from the watermarked subsegments. Compared to the existing patchwork methods for audio watermarking, the proposed method does not require knowledge of which segments of the watermarked audio signal contain watermarks and is more robust to conventional attacks. 2013 Journal Article http://hdl.handle.net/20.500.11937/24447 10.1007/s11042-013-1454-4 Springer fulltext |
| spellingShingle | patchwork stereo audio signal audio watermarking discrete Fourier transform Natgunanathan, I. Xiang, Y. Rong, Yue Peng, D. Robust patchwork-based watermarking method for stereo audio signals |
| title | Robust patchwork-based watermarking method for stereo audio signals |
| title_full | Robust patchwork-based watermarking method for stereo audio signals |
| title_fullStr | Robust patchwork-based watermarking method for stereo audio signals |
| title_full_unstemmed | Robust patchwork-based watermarking method for stereo audio signals |
| title_short | Robust patchwork-based watermarking method for stereo audio signals |
| title_sort | robust patchwork-based watermarking method for stereo audio signals |
| topic | patchwork stereo audio signal audio watermarking discrete Fourier transform |
| url | http://hdl.handle.net/20.500.11937/24447 |