Directional loudness map based audio processing
AssigneeFraunhofer-Gesellschaft zur Förderung der angewandten Forschung e.V.
InventorsJürgen Herre, Pablo Manuel Delgado, Sascha Dick
Life of this patent
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Abstract
An audio analyzer configured to obtain spectral domain representations of two or more input audio signals. Additionally the audio analyzer is configured to obtain directional information associated with spectral bands of the spectral domain representations and to obtain loudness information associated with different directions as an analysis result. Contributions to the loudness information are determined in dependence on the directional information.
Claims8
A decoder side format converter for converting a format of an audio content, which represents an audio scene, from a first format to a second format,
- wherein the format converter is configured to provide a representation of the audio content in the second format on the basis of the representation of the audio content in the first format;
- wherein the format converter is configured to adjust a complexity of the format conversion in dependence on contributions of input audio signals of the first format to an overall directional loudness map of the audio scene;
- wherein the overall directional loudness map indicates a loudness perception of the audio content for different directions.
An audio decoder for decoding an encoded audio content,
- wherein the audio decoder is configured to receive an encoded representation of one or more audio signals and to provide a decoded representation of the one or more audio signals;
- wherein the audio decoder is configured to reconstruct an audio scene using the decoded representation of the one or more audio signals;
- wherein the audio decoder is configured to adjust a decoding complexity in dependence on contributions of encoded signals to an overall directional loudness map of a decoded audio scene;
- wherein the overall directional loudness map indicates a loudness perception of the audio content for different directions.
A renderer for rendering an audio content,
- wherein the renderer is configured to reconstruct an audio scene on the basis of one or more input audio signals;
- wherein the renderer is configured to adjust a rendering complexity in dependence on contributions of the input audio signals to an overall directional loudness map of a rendered audio scene;
- wherein the overall directional loudness map indicates a loudness perception of the audio content for different directions.
Dependencies are inferred from the claim text.