公开(公告)号：WO2014160849A2

公开(公告)日：2014-10-02

申请号：PCT/US2014/031992

申请日：2014-03-27

Applicant: APPLE INC.

Inventor： BAUMGARTE, Frank ,  ALLAMANCHE, Eric A. ,  STROMMER, Stefan K.O.

IPC: G10L19/008

CPC classification number: H03G3/20 ,  G10L19/008 ,  G10L21/0316 ,  H03G7/007

Abstract: An audio normalization gain value is applied to an audio signal to produce a normalized signal. The normalized signal is processed to compute dynamic range control (DRC) gain values in accordance with a selected one of several pre-defined DRC characteristics. The audio signal is encoded, and the DRC gain values are provided as metadata associated with the encoded audio signal. Several other embodiments are also described and claimed.

Abstract translation: 将音频归一化增益值应用于音频信号以产生归一化信号。 处理归一化信号以根据几个预定义的DRC特性中选择的一个来计算动态范围控制（DRC）增益值。 音频信号被编码，并且提供DRC增益值作为与编码的音频信号相关联的元数据。 还描述和要求保护的其它几个实施例。

公开(公告)号：EP2956936B1

公开(公告)日：2019-04-24

申请号：EP14724887.6

申请日：2014-03-27

Applicant: Apple Inc.

Inventor： BAUMGARTE, Frank ,  ALLAMANCHE, Eric A. ,  STROMMER, Stefan K.O.

IPC: G10L19/008 ,  G10L21/0316 ,  H03G7/00

公开(公告)号：EP2956936A2

公开(公告)日：2015-12-23

申请号：EP14724887.6

申请日：2014-03-27

Applicant: Apple Inc.

Inventor： BAUMGARTE, Frank ,  ALLAMANCHE, Eric A. ,  STROMMER, Stefan K.O.

IPC: G10L19/008 ,  G10L21/0316 ,  H03G7/00

CPC classification number: H03G3/20 ,  G10L19/008 ,  G10L21/0316 ,  H03G7/007

Abstract: An audio normalization gain value is applied to an audio signal to produce a normalized signal. The normalized signal is processed to compute dynamic range control (DRC) gain values in accordance with a selected one of several pre-defined DRC characteristics. The audio signal is encoded, and the DRC gain values are provided as metadata associated with the encoded audio signal. Several other embodiments are also described and claimed.