METHOD AND DEVICE FOR NORMALIZED PLAYING AUDIO MEDIADATA WITH EMBEDDED VOLUME METADATA AND WITHOUT THEM ON NEW MEDIA DEVICES

摘要

FIELD: physics.;SUBSTANCE: device decodes a bitstream containing audio data and volume metadata containing a reference loudness value to generate an audio output signal. The device comprises a signal processor comprising a gain control device configured to adjust the output audio signal level. The gain control device includes a reference volume decoder configured to generate a loudness value, a gain calculator configured to calculate the gain value based on the loudness value and based on the sound power control value, and a volume processor configured to control the volume of the audio output signal based on the gain value.;EFFECT: providing the ability to normalize the playback volume both the content containing metadata of loudness, and the content that does not contain volume metadata.;16 cl, 5 dwg