AUDIO METADATA PROVIDING APPARATUS AND METHOD, AND MULTICHANNEL AUDIO DATA PLAYBACK APPARATUS AND METHOD TO SUPPORT DYNAMIC FORMAT CONVERSION

摘要

An audio metadata providing apparatus and method and a multichannel audio data playback apparatus and method to support a dynamic format conversion are provided. Dynamic format conversion information may include information about a plurality of format conversion schemes that are used to convert a first format set by an author of multichannel audio data into a second format that is based on a playback environment of the multichannel audio data and that are each set for corresponding playback periods of the multichannel audio data. The audio metadata providing apparatus may provide audio metadata including the dynamic format conversion information. The multichannel audio data playback apparatus may identify the dynamic format conversion information from the audio metadata, may convert the first format of the multichannel audio data into the second format based on the identified dynamic format conversion information, and may play back the multichannel audio data in the second format.

主权项

1. An audio metadata providing apparatus comprising:
a conversion information identifier configured to identify dynamic format conversion information on a conversion of a format of multichannel audio data from a first format to a second format, the first format being set by an author of the multichannel audio data and the second format being based on a playback environment of the multichannel audio data; and an audio metadata generator configured to generate audio metadata comprising the identified dynamic format conversion information, wherein the dynamic format conversion information comprises information about a plurality of format conversion schemes of converting the first format into the second format, and each of the plurality of format conversion schemes is set for a corresponding playback period of the multichannel audio data.