| 摘要 |
A method, an apparatus, and a computer program product for digital audio watermarking of wavetable (WT) format audio, including downloadable sounds (DLS) ( 110 ), are disclosed. Correspondingly, a method, an apparatus, and a computer program product for extracting watermarks ( 126, 552 ) from a digital audio watermarked WT audio ( 162, 510 ) are disclosed. In particular, a digital audio watermark ( 126 ) is embedded ( 140, 130 ) in both articulation parameters ( 122 ) and sample data ( 124 ) of a DLS ( 110 ). A finite automaton module ( 220 ) is used to implement adaptive coding ( 130 ) of the sample data ( 124 ). Virtual parameters ( 430 ) are generated for information hiding ( 140 ) applied to the articulation parameters ( 122 ). Optionally, playback of the WT ( 152 ) can be limited by an embedded control signal. Brief overviews of MIDI and DLS are provided.
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