Audio Transmission Metafile Attribute Insertion for Selective Decoding
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Solution Overview
Problem
Existing technologies face challenges in reducing the process load on the reception side when transmitting multiple types of encoded audio data, such as 5.1 channel and 7.1 channel data, which are used to create a more realistic surround sound effect.
Innovation Solution
A transmission device that includes a transmitting unit to send a metafile containing meta information for acquiring audio streams, and an information inserting unit that inserts attribute information into the metafile to indicate the attributes of each group of encoded data, allowing the reception side to selectively decode and use only the necessary data.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If multiple types of encoded audio data are transmitted together, then sound reproduction with realistic surrounding effect is achieved, but process load on the reception side increases
Solution Approach 1:
The patent applies preliminary action by inserting attribute information into the metafile before transmission. This allows the reception device to identify and select necessary encoded data groups in advance, avoiding the need to process all transmitted data. The attribute information is prepared and embedded in the metadata structure prior to decoding operations, enabling efficient filtering and reducing reception-side processing load while maintaining high-quality sound reproduction.
2Productivity
If attribute information is inserted into the metafile, then selective decoding of necessary data groups is enabled, but the metafile size increases
Solution Approach 1:
The patent applies local quality by inserting attribute information selectively into specific portions of the metafile structure where it is most needed for identification and selection. Rather than adding comprehensive metadata throughout the entire file, the attribute information is localized to the encoded data group descriptors, providing just enough information for efficient selective decoding while minimizing overall metafile size expansion.
Data Source
AI summary
The present technology reduces a process load in a reception side when a plurality of types of audi data is transmitted. A metafile having meta information used to acquire, in a reception device, a predetermined number of audio streams including a plurality of groups of encoded data is transmitted. To the metafile, attribute information indicating each attribute of the encoded data of the plurality of groups is inserted. For example, to the metafile, stream correspondence relation information indicating in which audio stream the encoded data of the plurality of groups is included respectively is further inserted.