LA P/974 A 20260424 20060101
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10 L 19 00 A 20060101
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04 B 1 66 A LA P/974 20240926 EU 09007086.3 20090527 SG 2011053774 20100112 US 61/147,815 20090128 Fraunhofer-Gesellschaft zur Förderung der angewandten Forschung e.V.
Hansastrasse 27c, 80686 Munich, Germany DT
DT Johannes HILPERT
Herrnhuettestrasse 46, 90411 Nuernberg, DE DE
Julien ROBILLIARD
Innerer Kleinreuther Weg 25 A,90408 Nuernberg, DE DE
Matthias NEUSINGER
Bergstrasse 10,91186 Rohr, DE DE
CONCETTI-LAO CO., LTD
Lao-Thai Friendship Road, Sokpaluang Village,Sisattanak District, Vientiane Lao PDR, Tel: 312 383 LA
PPARATUS, METHOD AND COMPUTER PROGRAM FOR UPMIXING A DOWNMIX AUDIO SIGNAL PPARATUS, METHOD AND COMPUTER PROGRAM FOR UPMIXING A DOWNMIX AUDIO SIGNAL 20240926 20260424 Patent - Foreign

<p>An apparatus for upmixing a downmix audio signal describing one or more downmix audio channels into an upmixed audio signal describing a plurality of upmixed audio channels comprises an upmixer configured to apply temporally variable upmixing parameters to upmix the downmix audio signal in order to obtain the upmixed audio signal. The apparatus also comprises a parameter interpolator, wherein the parameter interpolator is configured toobtain one or more temporally interpolated upmix parameters to be used by the upmixer onthe basis of a first complex-valued upmix parameter and a subsequent second complexvalued upmix parameter. The parameter interpolator is configured to separately interpolatebetween a magnitude value of the first complex-valued upmix parameter and a magnitude&nbsp;value of the second complex-valued upmix parameter, and between a phase value of the firstcomplex-valued upmix parameter and a phase value of the second complex-valued upmixparameter, to obtain the one or more temporally interpolated upmix parameters. A respectivemethod can be implemented, for example, as a computer program</p>

<p>An apparatus for upmixing a downmix audio signal describing one or more downmix audio channels into an upmixed audio signal describing a plurality of upmixed audio channels comprises an upmixer configured to apply temporally variable upmixing parameters to upmix the downmix audio signal in order to obtain the upmixed audio signal. The apparatus also comprises a parameter interpolator, wherein the parameter interpolator is configured toobtain one or more temporally interpolated upmix parameters to be used by the upmixer onthe basis of a first complex-valued upmix parameter and a subsequent second complexvalued upmix parameter. The parameter interpolator is configured to separately interpolatebetween a magnitude value of the first complex-valued upmix parameter and a magnitude&nbsp;value of the second complex-valued upmix parameter, and between a phase value of the firstcomplex-valued upmix parameter and a phase value of the second complex-valued upmixparameter, to obtain the one or more temporally interpolated upmix parameters. A respectivemethod can be implemented, for example, as a computer program</p>