Invention Grant
US09576585B2 Method and apparatus for normalized audio playback of media with and without embedded loudness metadata of new media devices
有权
用于具有和不具有新媒体设备的嵌入式响度元数据的媒体的归一化音频回放的方法和装置
- Patent Title: Method and apparatus for normalized audio playback of media with and without embedded loudness metadata of new media devices
- Patent Title (中): 用于具有和不具有新媒体设备的嵌入式响度元数据的媒体的归一化音频回放的方法和装置
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Application No.: US14811203Application Date: 2015-07-28
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Publication No.: US09576585B2Publication Date: 2017-02-21
- Inventor: Robert Bleidt
- Applicant: Fraunhofer-Gesellschaft zur Foerderung der angewandten Forschung e.V.
- Applicant Address: DE Munich
- Assignee: Fraunhofer-Gesellschaft zur Foerderung der angewandten Forschung e.V.
- Current Assignee: Fraunhofer-Gesellschaft zur Foerderung der angewandten Forschung e.V.
- Current Assignee Address: DE Munich
- Agency: Perkins Coie LLP
- Agent Michael A. Glenn
- Main IPC: G10L19/00
- IPC: G10L19/00 ; G10L19/012 ; G10L19/26
Abstract:
A decoder device for decoding a bitstream so as to produce therefrom an audio output signal, the bitstream having audio data and optionally loudness metadata containing a reference loudness value, wherein a gain control device has a reference loudness decoder configured to create a loudness value, wherein the loudness value is the reference loudness value in case that the reference loudness value is present in the bitstream; wherein the gain control device has a gain calculator configured to calculate a gain value based on the loudness value and based on a volume control value, which is provided by an external user interface allowing a user to control the volume control value, and a loudness processor configured to control the loudness of the audio output signal based on the gain value.
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