Invention Grant
- Patent Title: Method and device for applying dynamic range compression to a higher order ambisonics signal
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Application No.: US15891326Application Date: 2018-02-07
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Publication No.: US10362424B2Publication Date: 2019-07-23
- Inventor: Johannes Boehm , Florian Keiler
- 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: EP14305423 20140324; EP14305559 20140415
- Main IPC: H04S3/00
- IPC: H04S3/00 ; G10L19/008 ; H04S3/02

Abstract:
A method for performing DRC on a HOA signal comprises transforming the HOA signal to the spatial domain, analyzing the transformed HOA signal, and obtaining, from results of said analyzing, gain factors that are usable for dynamic compression. The gain factors can be transmitted together with the HOA signal. When applying the DRC, the HOA signal is transformed to the spatial domain, the gain factors are extracted and multiplied with the transformed HOA signal in the spatial domain, wherein a gain compensated transformed HOA signal is obtained. The gain compensated transformed HOA signal is transformed back into the HOA domain, wherein a gain compensated HOA signal is obtained. The DRC may be applied in the QMF-filter bank domain.
Public/Granted literature
- US20190052990A1 METHOD AND DEVICE FOR APPLYING DYNAMIC RANGE COMPRESSION TO A HIGHER ORDER AMBISONICS SIGNAL Public/Granted day:2019-02-14
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