Two-channel time-frequency audio watermarking
The time-frequency audio watermarking scheme [1] operates by removing and adding samples to the frequency spectrum of the audio signals (compression-expansion) as a way to embed watermarks. The watermarks so embedded are identified by comparing the waveforms of the original and the...
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| Main Authors: | , |
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| Other Authors: | |
| Format: | Conference or Workshop Item |
| Language: | English |
| Published: |
2009
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| Online Access: | https://hdl.handle.net/10356/91127 http://hdl.handle.net/10220/5924 |
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| Institution: | Nanyang Technological University |
| Language: | English |
| Summary: | The time-frequency audio watermarking scheme [1] operates by removing and adding samples to the frequency spectrum of the audio signals (compression-expansion) as a way
to embed watermarks. The watermarks so embedded are identified by comparing the waveforms of the original and the
watermarked signals. For a single channel signal, the compression-expansion represents one binary symbol and the unchanged frames in between are taken as the other binary
symbol. For audio signals with two channels such as stereo music, a method is proposed in this paper so that compressionexpansion
in the two channels are used to represent different binary symbols In addition, some modifications to the original scheme [1] are also presented. |
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