US 12,456,478 B2
Apparatus, method or computer program for generating an output downmix representation
Franz Reutelhuber, Erlangen (DE); Eleni Fotopoulou, Erlangen (DE); and Markus Multrus, Erlangen (DE)
Assigned to Fraunhofer-Gesellschaft zur Förderung der angewandten Forschung e.V., Munich (DE)
Filed by Fraunhofer-Gesellschaft zur Förderung der angewandten Forschung e.V., Munich (DE)
Filed on Oct. 14, 2021, as Appl. No. 17/501,993.
Application 17/501,993 is a continuation of application No. PCT/EP2020/061233, filed on Apr. 22, 2020.
Claims priority of application No. 19170621 (EP), filed on Apr. 23, 2019; and application No. PCT/EP2019/070376 (WO), filed on Jul. 29, 2019.
Prior Publication US 2022/0036911 A1, Feb. 3, 2022
Int. Cl. G10L 21/04 (2013.01); G10L 19/008 (2013.01); G10L 19/022 (2013.01); H04S 1/00 (2006.01); H04S 7/00 (2006.01)
CPC G10L 21/04 (2013.01) [G10L 19/008 (2013.01); G10L 19/022 (2013.01); H04S 1/007 (2013.01); H04S 7/30 (2013.01); H04S 2400/03 (2013.01)] 6 Claims
OG exemplary drawing
 
1. An apparatus for generating an output downmix representation from an input downmix representation, wherein a first portion of the input downmix representation is in accordance with a first downmixing scheme, and a second portion of the input downmix representation is in accordance with a second downmixing scheme, the apparatus comprising:
an upmixer for upmixing the first portion of the input downmix representation using an upmixing scheme corresponding to the first downmixing scheme to acquire at least one first upmixed portion,
wherein the first portion of the input downmix representation is a first frequency band of a spectrum and the second portion of the input downmix representation is a second frequency band of the spectrum;
a downmixer for downmixing the at least one first upmixed portion in accordance with the second downmixing scheme different from the first downmixing scheme to acquire a first downmixed portion; and
a combiner configured for combining the first downmixed portion and the second portion of the input downmix representation to obtain the output downmix representation comprising a first output representation for the first portion of the input downmix representation and a second output representation for the second portion of the input downmix representation,
wherein the first output representation for the first portion of the input downmix representation and the second output representation for the second portion of the input downmix representation represent the output downmix representation and are based on the second downmixing scheme.