Loudness adjustment for downmixed audio content

By employing dynamic range control techniques such as DRC and auditory scene analysis, the challenge of maintaining consistent loudness and intelligibility across different media formats and playback environments is addressed, resulting in improved audio processing and listening experiences.

JP2025092574APending Publication Date: 2025-06-19DOLBY LABORATORIES LICENSING CORP +1
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Patent Information

Application Number
JP2025052789
Authority / Receiving Office
JP · JP
Patent Type
Applications
Current Assignee / Owner
Priority Date
2014-02-10
Filing Date
2025-03-27
Publication Date
2025-06-19

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Abstract

To provide loudness adjustment for downmixed audio content.SOLUTION: Audio content coded for a reference speaker configuration is downmixed to downmix audio content coded for a specific speaker configuration. One or more gain adjustments are performed on individual portions of the downmix audio content coded for the specific speaker configuration. Loudness measurements are then performed on the individual portions of the downmix audio content. An audio signal that comprises the audio content coded for the reference speaker configuration and downmix loudness metadata is generated. The downmix loudness metadata is created on the basis of at least in part the loudness measurements on the individual portions of the downmix audio content.SELECTED DRAWING: Figure 3
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Citation Information

Patent Citations

  • Sound signal conversion device and sound signal conversion program

    JP2012034295A

  • Audio metadata transcoding

    JP2012504260A

  • System and method for non-destructively normalizing the loudness of audio signals in portable devices

    JP2013519918A