Method and Apparatus for Conversion Between Multi-Channel Audio Formats
AssigneeFraunhofer-Gesellschaft zur Foerderung der angewandten Forschung e.V.
InventorsJuergen Herre, Ville Pulkki
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Abstract
An input multi-channel representation is converted into a different output multi-channel representation of a spatial audio signal, in that an intermediate representation of the spatial audio signal is derived, the intermediate representation having direction parameters indicating a direction of origin of a portion of the spatial audio signal; and in that the output multi-channel representation of the spatial audio signal is generated using the intermediate representation of the spatial audio signal.
Claims22
Apparatus for conversion of an input multi-channel representation into a different output multi-channel representation of a spatial audio signal, comprising:
- an input representation decoder for deriving a number of audio channels corresponding to the loudspeakers associated to the input multi-channel representation;
- an analyzer for deriving, using the number of audio channels corresponding to the loudspeakers associated to the input multi-channel representation, an intermediate representation of the spatial audio signal, the intermediate representation comprising direction parameters indicating a direction of origin of a portion of the spatial audio signal;
- and
- a signal composer for generating the output multi-channel representation of the spatial audio signal using the intermediate representation of the spatial audio signal.
Method for conversion of an input multi-channel representation into a different output multi-channel representation of a spatial audio signal, the method comprising:
- deriving a number of audio channels corresponding to the loudspeakers associated to the input multi-channel representation;
- deriving, using the number of audio channels corresponding to the loudspeakers associated to the input multi-channel representation, an intermediate representation of the spatial audio signal, the intermediate representation comprising direction parameters indicating a direction of origin of a portion of the spatial audio signal;
- and
- generating the output multi-channel representation of the spatial audio signal using the intermediate representation of the spatial audio signal.
A computer program for, when running on a computer, implementing the method for conversion of a multi-channel representation into a different output multi-channel representation of a spatial audio signal, the method comprising:
- deriving a number of audio channels corresponding to the loudspeakers associated to the input multi-channel representation;
- deriving, using the number of audio channels corresponding to the loudspeakers associated to the input multi-channel representation, an intermediate representation of the spatial audio signal, the intermediate representation comprising direction parameters indicating a direction of origin of a portion of the spatial audio signal;
- and
- generating the output multi-channel representation of the spatial audio signal using the intermediate representation of the spatial audio signal.
Dependencies are inferred from the claim text.