| US 7,460,991 B2 | ||
| System and method for shaping a data signal for embedding within an audio signal | ||
| Aled Wynne Jones, Harston (United Kingdom); Michael Raymond Reynolds, Harston (United Kingdom); David Bartlett, Harston (United Kingdom); Ian Michael Hosking, Harston (United Kingdom); Donald Glenn Guy, Harston (United Kingdom); Peter John Kelly, Harston (United Kingdom); Daniel Reginald Ewart Timson, Harston (United Kingdom); Nicolas Vasilopolous, Harston (United Kingdom); Alan Michael Hart, Harston (United Kingdom); and Robert John Morland, Harston (United Kingdom) | ||
| Assigned to Intrasonics Limited, Harston, Cambridge (United Kingdom) | ||
| Appl. No. 10/432,889 PCT Filed Nov. 30, 2001, PCT No. PCT/GB01/05300 § 371(c)(1), (2), (4) Date Apr. 22, 2005, PCT Pub. No. WO02/45286, PCT Pub. Date Jun. 06, 2002. |
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| Claims priority of application No. 0029273.0 (GB), filed on Nov. 30, 2000; application No. 0101947.0 (GB), filed on Jan. 25, 2001; application No. 0101950.4 (GB), filed on Jan. 25, 2001; application No. 0101952.0 (GB), filed on Jan. 25, 2001; application No. 0101953.8 (GB), filed on Jan. 25, 2001; application No. 0103623.5 (GB), filed on Feb. 13, 2001; application No. 0106587.9 (GB), filed on Mar. 16, 2001; application No. 0106778.4 (GB), filed on Mar. 19, 2001; application No. 0107124.0 (GB), filed on Mar. 21, 2001; application No. 0108205.6 (GB), filed on Apr. 02, 2001; application No. 0114715.6 (GB), filed on Jun. 15, 2001; and application No. 0127013.1 (GB), filed on Nov. 09, 2001. | ||
| Prior Publication US 2005/0219068 A1, Oct. 06, 2005 | ||
| Int. Cl. G10L 19/14 (2006.01); G10L 21/00 (2006.01) | ||
| U.S. Cl. 704—211 [704/219] | 49 Claims |
| 1. An apparatus for shaping a data signal for embedding within an audio signal, the apparatus comprising:
a first receiver operable to receive the data signal;
a second receiver operable to receive the audio signal;
a time series modeler operable to apply a time series model to the audio signal in order to generate a plurality of coefficients
indicative of the audio signal;
a synthesizer operable to synthesize a time domain tonal signal using the generated coefficients;
a subtractor operable to difference the synthesized tonal signal and the audio signal to generate a time domain residual signal;
and
a shaper operable to shape the spectrum of the data signal in dependence upon the residual signal to form a shaped data signal.
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