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Ehret Andreas, Hoerich Holger, Schug Michael, Schneider Andreas: Apparatus for generating and interpreting a data stream having a series of segments using data in subsequent data frames. Dolby Sweden, SK Telecom, Ehret Andreas, Hoerich Holger, Schug Michael, Schneider Andreas, ZINKLER Franz, June 21, 2007: WO/2007/068294 (65 worldwide citation)

An apparatus for generating a data stream having a series of segments using data organized in subsequent data frames, a data frame having more important and less important data. It comprises a packetiser for packetising data from a data frame into the series of segments having a first segment and a ...


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Engdegard Jonas, Villemoes Lars, Purnhagen Heiko, Resch Barbara: Enhanced coding and parameter representation of multichannel downmixed object coding. Dolby Sweden, Engdegard Jonas, Villemoes Lars, Purnhagen Heiko, Resch Barbara, ZINKLER Franz, April 24, 2008: WO/2008/046531 (23 worldwide citation)

An audio object coder for generating an encoded object signal using a plurality of audio objects includes a downmix information generator for generating downmix information indicating a distribution of the plurality of audio objects into at least two downmix channels, an audio object parameter gener ...


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Johannes Hilpert, Karsten Linzmeier, Juergen Herre, Ralph Sperschneider, Andreas Hoelzer, Lars Villemoes, Jonas Engdegard, Heiko Purnhagen, Kristofer Kjoerling, Dirk Jeroen Breebaart, Werner Oomen: Apparatus and method for multi-channel parameter transformation. Fraunhofer Gesellschaft zur Foerderung der Angewandten Forschung E V, Dolby Sweden, Koninklijke Philips Electronics, Michael A Glenn, Perkins Coie, April 1, 2014: US08687829 (16 worldwide citation)

A parameter transformer generates level parameters, indicating an energy relation between a first and a second audio channel of a multi-channel audio signal associated to a multi-channel loudspeaker configuration. The level parameter are generated based on object parameters for a plurality of audio ...


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VILLEMOES LARS: Cross product enhanced harmonic transposition. DOLBY SWEDEN, Merh Ip Matias Erny Reichl Hoffmann, July 22, 2010: WO/2010/081892 (14 worldwide citation)

The present invention relates to audio coding systems which make use of a harmonic transposition method for high frequency reconstruction (HFR). A system and a method for generating a high frequency component of a signal from a low frequency component of the signal is described. The system comprises ...


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Hedelin Per Hendrik, Carlsson Pontus Jan, Samuelsson Jonas Lief, Schug Michael: Audio encoder and decoder. Dolby Sweden, July 8, 2009: EP2077550-A1 (9 worldwide citation)

The present invention teaches a new audio coding system that can code both general audio and speech signals well at low bit rates. A proposed audio coding system comprises linear prediction unit for filtering an input signal based on an adaptive filter; a transformation unit for transforming a frame ...


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Engdegard Jonas, Villemors Lars, Purnhagen Heiko, Resch Barbara, Falch Cornelia, Herre Juergen, Hilpert Johannes, Hoelzer Andreas, Terentiev Leonid: Apparatus and method for synthesizing an output signal. Dolby Sweden, Engdegard Jonas, Villemors Lars, Purnhagen Heiko, Resch Barbara, Fraunhofer Gesellschaft Zur Förderung Der Angewandten Forschung Ev, Falch Cornelia, Herre Juergen, Hilpert Johannes, Hoelzer Andreas, Terentiev Leonid, ZINKLER Franz, November 6, 2008: WO/2008/131903 (8 worldwide citation)

An apparatus for synthesizing a rendered output signal having a first audio channel and a second audio channel includes a decorrelator stage (356) for generating a decorrelator signal based on a downmix signal, and a combiner (364) for performing a weighted combination of the downmix signal and a de ...


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Biswas Arijit, Purnhagen Heiko, Kjoerling Kristofer: Audio encoder and decoder. Dolby Sweden, July 8, 2009: EP2077551-A1 (7 worldwide citation)

The present invention teaches a new audio coding system that can code both general audio and speech signals well at low bit rates. A proposed audio coding system comprises a linear prediction unit for filtering an input signal based on an adaptive filter; a transformation unit for transforming a fra ...


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Villemoes Lars, Kjörling Kristofer, Breebaart Jeroen: Generation of spatial downmixes from parametric representations of multi channel signals. Dolby Sweden, Koninklijke Philips Electronics, Villemoes Lars, Kjörling Kristofer, Breebaart Jeroen, STÖCKELER Ferdinand, October 4, 2007: WO/2007/110103 (7 worldwide citation)

A headphone down mix signal (314) can be efficiently derived from a parametric down mix of a multi-channel signal (312), when modified HRTFs (310) (head related transfer functions) are derived from HRTFs (308) of a multi-channel signal using a level parameter (306) having information on a level rela ...