Method and apparatus for normalized audio playback of media with and without embedded volume metadata for new media devices

摘要

A decoder device is provided for decoding the bitstream to generate an audio output signal, the bitstream is composed of audio data and volume metadata including a reference volume value in an arbitrary manner. An audio decoder device configured to reconstruct an audio signal from the data and a signal processor configured to generate an audio output signal based on the audio signal, wherein the signal processor is a level of the audio output signal A gain controller configured to adjust the volume, the gain controller including a reference volume decoder configured to create a volume value, and if the reference volume value (4) is present in the bitstream, the volume The value is a reference range value, and the gain control device uses a volume value and an external user interface that allows the user to control the volume control value. A gain calculator configured to calculate a gain value based on the volume control value generated by the case, wherein the gain control device is configured to control the volume of the audio output signal based on the gain value. A decoder device including a processor. [Selection] Figure 2