公开(公告)号：US20210120337A1

公开(公告)日：2021-04-22

申请号：US16969907

申请日：2019-02-15

Applicant: Dolby Laboratories Licensing Corporation

Inventor： Scott Gregory NORCROSS ,  Michael GRANT ,  James Stuart COWDERY ,  Sachin NANDA ,  Nisarg Vipul SHAH

IPC: H04R3/04 ,  G10L19/008 ,  H03G9/00 ,  H03G5/16

Abstract: Audio data in a first format may be processed to produce audio data in a second format, which may be a reduced or simplified version of the first format. A loudness correction process may produce loudness-corrected audio data in the second format. A first power of the audio data in the second format and a second power of the loudness-corrected audio data in the second format may be determined. A second-format loudness correction factor for the audio data in the second format may be based, at least in part, on a power ratio between the first power and the second power. A first-format loudness correction factor for the audio data in the first format may be based, at least in part, on the power ratio and a power relationship between the audio data in the first format and the audio data in the second format.