公开(公告)号：WO2014160849A3

公开(公告)日：2014-11-27

申请号：PCT/US2014031992

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.

Abstract translation: 音频标准化增益值被应用于音频信号以产生标准化信号。 归一化信号被处理以根据几个预先定义的DRC特性中选定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DRC增益值被提供为与编码的音频信号相关联的元数据。 还描述并要求保护若干其他实施例。