Title:
2つ以上のオーディオ信号の処理方法
Document Type and Number:
Japanese Patent JP5346051
Kind Code:
B2
Abstract:
In the MPEG-4 standard ISO/IEC 14496:2001 several audio objects that can be coded with different MPEG-4 format coding types can together form a composed audio system representing a single soundtrack from the several audio substreams. In a receiver the multiple audio objects are decoded separately, but not directly played back to a listener. Instead, transmitted instructions for mixdown are used to prepare a single soundtrack. Mixdown conflicts can occur in case the audio signals to be combined have different channel numbers or configurations. According to the invention an additional audio channel configuration node is used that tags the correct channel configuration information items to the decoded audio data streams to be presented. The invention enables the content provider to set the channel configuration in such a way that the presenter at receiver side can produce a correct channel presentation under all circumstances. An escape code value in the channel configuration data facilitates correct handling of not yet defined channel combinations.
Inventors:
Jürgen Schmid
Jens Spire
Ernst F Schrader
Johannes Böhm
Jens Spire
Ernst F Schrader
Johannes Böhm
Application Number:
JP2011046044A
Publication Date:
November 20, 2013
Filing Date:
March 03, 2011
Export Citation:
Assignee:
Thomson Licensing
International Classes:
G10L19/008; G10L19/02; H04S1/00; H04S3/00; H04S5/02
Domestic Patent References:
| JP200090582A | ||||
| JP2001250317A | ||||
| JP2003203026A |
Attorney, Agent or Firm:
Riki Kikoshi
Takashi Ishii
Kuramochi Makoto
Suita Reiko
Takashi Ishii
Kuramochi Makoto
Suita Reiko