Encoding and reproduction of three dimensional audio soundtracks

摘要

The present invention provides a novel end-to-end solution for creating, encoding, transmitting, decoding and reproducing spatial audio soundtracks. The provided soundtrack encoding format is compatible with legacy surround-sound encoding formats, so that soundtracks encoded in the new format may be decoded and reproduced on legacy playback equipment with no loss of quality compared to legacy formats.

主权项

1. A method of encoding an audio soundtrack, comprising the steps of:
receiving a base mix signal representing a physical sound; receiving at least one object audio signal, each object audio signal having at least one audio object component of the audio soundtrack; receiving at least one object mix cue stream, the object mix cue streams defining mixing parameters of the object audio signals; receiving at least one object render cue stream, the object render cue streams defining rendering parameters for rendering the object audio signals in a target spatial audio format; encoding the object audio signals by a first audio encoding processor to obtain encoded object audio signals that contain encoded audio objects; decoding the encoded object audio signals by a first audio decoding processor; utilizing the decoded object audio signals and the object mix cue streams to combine the audio object components with the base mix signal, thereby obtaining a downmix signal; and multiplexing the downmix signal, the encoded object audio signals, the object render cue streams, and the object mix cue streams to form a soundtrack data stream.