Invention Application
- Patent Title: METHOD AND APPARATUS FOR COMPRESSING AND DECOMPRESSING A HIGHER ORDER AMBISONICS REPRESENTATION FOR A SOUND FIELD
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Application No.: US17532246Application Date: 2021-11-22
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Publication No.: US20220159399A1Publication Date: 2022-05-19
- Inventor: Alexander Krueger , Sven Kordon , Johannes Boehm
- Applicant: DOLBY LABORATORIES LICENSING CORPORATION
- Applicant Address: US CA San Francisco
- Assignee: DOLBY LABORATORIES LICENSING CORPORATION
- Current Assignee: DOLBY LABORATORIES LICENSING CORPORATION
- Current Assignee Address: US CA San Francisco
- Priority: EP12306569.0 20121212
- Main IPC: H04S7/00
- IPC: H04S7/00 ; H04S3/00 ; G10L19/008

Abstract:
The invention improves HOA sound field representation compression and decompression. A decoder decodes compressed dominant directional signals and compressed residual component signals so as to provide decompressed dominant directional signals and decompressed time domain signals representing a residual HOA component in a spatial domain. A re-correlator re-correlates the decompressed time domain signals to obtain a corresponding reduced-order residual HOA component. A processor determines a decompressed residual HOA component based on the corresponding reduced-order residual HOA component, and determines predicted directional signals based on at least a parameter. The processor is further configured to determine an HOA sound field representation based on the decompressed dominant directional signals, the predicted directional signals, and the decompressed residual HOA component.
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