METADATA FOR DUCKING CONTROL

摘要

An audio encoding device and an audio decoding device are described herein. The audio encoding device may examine a set of audio channels/channel groups representing a piece of sound program content and produce a set of ducking values to associate with one of the channels/channel groups. During playback of the piece of sound program content, the ducking values may be applied to all other channels/channel groups. Application of these ducking values may cause (1) the reduction in dynamic range of ducked channels/channel groups and/or (2) movement of channels/channel groups in the sound field. This ducking may improve intelligibility of audio in the non-ducked channel/channel group. For instance, a narration channel/channel group may be more clearly heard by listeners through the use of selective ducking of other channels/channel groups during playback.

主权项

1. A method for encoding a piece of sound program content, comprising:
determining a first channel group in the piece of sound program content to emphasize during playback of the piece of sound program content; generating a set of ducking values to apply to a second channel group in the piece of sound program content; and associating the ducking values with the first channel group in an audio asset, wherein the audio asset includes the first channel group, the second channel group, and the ducking values that are associated with the first channel group.