Invention Grant
- Patent Title: Deferred loudness adjustment for dynamic range control
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Application No.: US18403432Application Date: 2024-01-03
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Publication No.: US12248731B2Publication Date: 2025-03-11
- Inventor: Frank Baumgarte
- Applicant: Apple Inc.
- Applicant Address: US CA Cupertino
- Assignee: Apple Inc.
- Current Assignee: Apple Inc.
- Current Assignee Address: US CA Cupertino
- Agency: Aikin & Gallant, LLP
- Main IPC: G06F3/16
- IPC: G06F3/16 ; H04R3/04

Abstract:
A bitstream is obtained by a decoder side, that contains an encoded version of an audio signal and an instantaneous loudness sequence of the audio signal. The instantaneous loudness sequence has not been loudness normalized. A dynamic range control, DRC, gain sequence is produced by applying the instantaneous loudness sequence to a DRC characteristic, with loudness normalization. The DRC gain sequence is applied to the decoded audio signal. Other aspects are also described and claimed.
Public/Granted literature
- US20240143271A1 Deferred Loudness Adjustment For Dynamic Range Control Public/Granted day:2024-05-02
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