Apparatus and method for processing stereo signals for reproduction in cars to achieve individual three-dimensional sound by frontal loudspeakers
AssigneeFraunhofer-Gesellschaft zur Foerderung der angewandten Forschung e.V.
InventorsWolfgang Hess, Oliver Hellmuth, Stefan Varga, Emanuel Habets, Jan Plogsties, Juergen Herre
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Abstract
Embodiments provide a digital processor including an ambient portion extractor and a spatial effect processing stage. The ambient portion extractor is configured to extract an ambient portion from a multi-channel signal. The spatial effect processing stage is configured to generate a spatial effect signal based on the ambient portion of the multi-channel signal. The digital processor is configured to combine the multi-channel signal or a processed version thereof with the spatial effect signal.
Claims20
A digital processor for a loudspeaker reproduction system with at least three front loudspeakers, comprising:
- an ambient portion extractor configured to extract an ambient portion from a multi-channel signal;
- and
- a spatial effect processing stage, configured to generate a spatial effect signal based on the ambient portion of the multi-channel signal;
- wherein the digital processor is configured to combine a processed version of the multi-channel signal with the spatial effect signal, to acquire a signal for the at least three front loudspeakers;
- wherein the digital processor comprises a multi-channel processing stage configured to generate the processed version of the multi-channel signal;
- wherein the digital processor is configured to combine the processed version of the multi-channel signal and the spatial effect signal;
- wherein the multi-channel signal is a stereo signal;
- and
- wherein the processed version of the multi-channel signal comprises at least one more channel than the multi-channel signal;
- wherein the multi-channel processing stage is configured to generate at least two individual stereo sound stage signals as the processed version of the multi-channel signal from the stereo signal for generating with the loudspeaker reproduction system comprising the at least three loudspeakers at least two individual stereo sound stages for at least two different listening positions.
A method for processing signals for a loudspeaker reproduction system with at least three front loudspeakers, the method comprising:
- extracting an ambient portion from a multi-channel signal;
- and
- generating a spatial effect signal based on the ambient portion of the multi-channel signal;
- and
- generating a processed version of the multi-channel signal;
- combining the processed version of the multi-channel signal with the spatial effect signal, to acquire a signal for the at least three front loudspeakers;
- wherein the multi-channel signal is a stereo signal;
- wherein the processed version of the multi-channel signal comprises at least one more channel than the multi-channel signal;
- and
- wherein generating the processed version of the multi-channel signal comprises generating at least two individual stereo sound stage signals as the processed version of the multi-channel signal from the stereo signal for generating with the loudspeaker reproduction system comprising the at least three loudspeakers at least two individual stereo sound stages for at least two different listening positions.
A non-transitory digital storage medium having a computer program stored thereon to perform the method for processing signals for a loudspeaker reproduction system with at least three front loudspeakers, the method comprising:
- extracting an ambient portion from a multi-channel signal;
- and
- generating a spatial effect signal based on the ambient portion of the multi-channel signal;
- and
- generating a processed version of the multi-channel signal;
- combining the processed version of the multi-channel signal with the spatial effect signal, to acquire a signal for the at least three front loudspeakers;
- wherein the multi-channel signal is a stereo signal;
- wherein the processed version of the multi-channel signal comprises at least one more channel than the multi-channel signal;
- and
- wherein generating the processed version of the multi-channel signal comprises generating at least two individual stereo sound stage signals as the processed version of the multi-channel signal from the stereo signal for generating with the loudspeaker reproduction system comprising the at least three loudspeakers at least two individual stereo sound stages for at least two different listening positions,
- when said computer program is run by a computer.
Dependencies are inferred from the claim text.