Method and apparatus for generating side information bitstream of multi-object audio signal
a multi-object audio signal and information bitstream technology, applied in the field of method and apparatus for generating side information bitstream of multi-object audio signal, can solve the problems of using sac technology, encoding and decoding conventions that do not allow users to consume one type of audio content in diverse ways, and cannot encode or decode audio signals having various types of audio objects such as mono-channel audio objects
Inactive Publication Date: 2016-06-09
ELECTRONICS & TELECOMM RES INST
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Benefits of technology
This approach allows for dynamic audio scene changes and improved sound field rendering, enabling users to actively experience various audio scenes by updating preset information during playback, enhancing the audio reproduction experience.
Problems solved by technology
That is, the conventional audio signal encoding and decoding technology did not allow a user to consume one type of audio contents in diverse ways.
Since the SAC technology allows encoding and decoding a multi-channel audio signal formed of only one audio object type, it is impossible to encode or decode an audio signal having various types of audio objects such as a mono-channel audio object, a stereo channel audio object, or a multi-channel audio object such as 5.1 channels using the SAC technology.
However, a multi-object audio signal formed of multiple channel audio objects could not be encoded or decoded using the binaural cue coding BCC technology.
As described above, the conventional audio encoding and decoding technologies cannot be used to encode or decode a multi-object audio signal having multi-channel audio objects although a single object audio signal formed of multi-channel audio objects or a multi-object audio signal formed of mono-channel audio objects.
Therefore, a plurality of different channel audio objects cannot be combined based on the conventional audio encoding and decoding technologies.
Method used
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[0028]The advantages, features and aspects of the invention will become apparent from the following description of the embodiments with reference to the accompanying drawings, which is set forth hereinafter. When it is considered detailed description on a prior art may obscure a point of the present invention, the description will not be provided herein.
[0029]The present invention relates a technology for compressing and decompressing a multi-channel / multi-object audio signal. Multi-object audio encoding is a technology for compressing different audio objects together and transmitting the compressed audio objects. The multi-object audio encoding technology was developed based on a spatial audio coding (SAC) technology.
[0030]In a process of decoding a multi-object audio signal, an input audio signal formed of multi-objects is down-mixed and transmitted to a decoding apparatus. Here, a side information bitstream is transmitted with the down-mixed signal. The side information bitstream...
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Provided is a method and apparatus for generating a side information bitstream of a multi-object audio signal. The apparatus for generating a side information bitstream of a multi-object audio signal includes a spatial cue information input unit configured to receive spatial cue information generated in an encoder of the multi-object audio signal, a preset information input unit configured to receive preset information for the multi-object audio signal, and a side information bitstream generator configured to generate the side information bitstream based on the spatial cue information and the preset information. The side information bitstream includes a header region and a frame region, and the preset information is included in the frame region.
Description
CROSS REFERENCE TO RELATED APPLICATIONS[0001]This application is a continuation of U.S. patent application Ser. No. 12 / 933,019, filed Sep. 16, 2010, which is a 35 U.S.C. ยง371 national stage filing of PCT Application No. PCT / KR2009 / 001615 filed on Mar. 30, 2009, which claims priority to, and the benefit of, Korean Patent Application No. 10-2008-0029562 filed on Mar. 31, 2008, Korean Patent Application No. 10-2008-0034161 filed on Apr. 14, 2008 and Korean Patent Application No. 10-2008-0024374 filed on Mar. 23, 2009. The contents of the aforementioned applications are hereby incorporated by reference.TECHNICAL FIELD[0002]The present invention relates to a method and apparatus for generating a side information bitstream of a multi-object audio signal.[0003]This work was supported by the IT R&D program of MIC / IITA [2008-F-011-01, Developing Next Generation DTV Core Technology (Standardization Linkage), Developing Autostereoscopic Personal 3-D Broadcasting Technology (Continued)].BACKGRO...
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IPC IPC(8): H04S7/00G10L19/008H04S5/00G10L19/20G11B20/10H03M7/30
CPCH04S7/308H04S5/00H04S2400/03H04S2400/11G10L19/008
InventorSEO, JEONG-ILBEACK, SEUNG-KWONLEE, TAE-JINLEE, YONG-JUJANG, DAE-YOUNGKANG, KYEONGOKHONG, JIN-WOOKIM, JIN-WOONGAHN, CHIETEUK
OwnerELECTRONICS & TELECOMM RES INST