Multi-Channel Audio Decoder Parameter Configuration Cue
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Solution Overview
Problem
Existing multi-channel audio coding techniques require separate signaling for both audio decoding and multi-channel reconstruction, leading to data redundancy and flexibility limitations, especially in tandem coding scenarios where repeated lossy analysis and synthesis result in decreased audio quality.
Innovation Solution
Incorporating a parameter configuration cue in the data stream to determine whether the multi-channel reconstruction means should be configured based on explicit configuration information or the audio coding algorithm used for the transmission channel data, allowing for flexible configuration and reduced signaling overhead.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If separate signaling is used for audio decoding and multi-channel reconstruction, then both functions can be independently configured, but data redundancy increases and signaling overhead increases
Solution Approach 1:
The patent merges the configuration signaling for multi-channel reconstruction with the audio decoding process by introducing a parameter configuration cue that indicates whether configuration information should be extracted from the audio data itself or from separate signaling. This integration eliminates redundant separate signaling while maintaining the ability to independently configure both functions through a unified control mechanism.
Solution Approach 2:
The parameter configuration cue serves multiple functions: it indicates the source of configuration information (audio data or separate signaling), controls the extraction process, and enables flexible adaptation between different configuration modes. This multi-functionality reduces the need for separate dedicated signaling for configuration control.
2Adaptability or versatility
If explicit configuration information is always transmitted, then flexibility is maintained, but signaling overhead increases
Solution Approach 1:
Instead of always transmitting complete configuration information, the system transmits only the necessary parameter configuration cue (a single bit or small signal) that indicates whether configuration information is embedded in the audio data or provided separately. This partial action approach maintains flexibility while significantly reducing signaling overhead compared to transmitting all configuration data explicitly in all cases.
3Adaptability or versatility
If repeated lossy analysis and synthesis are performed in tandem coding, then coding flexibility is maintained, but audio quality decreases
Solution Approach 1:
The parameter configuration cue provides feedback information about the coding process state to the decoder, enabling it to adjust its behavior accordingly. In tandem coding scenarios, this feedback mechanism allows the system to maintain configuration flexibility while compensating for quality deterioration by adapting the reconstruction process based on the actual coding conditions.
Data Source
AI summary
For flexibly signaling a synchronous mode or an asynchronous mode in the multi-channel parameter reconstruction, a parameter configuration cue is inserted in the data stream, which is used by a configurator on the side of a multi-channel decoder to configure a multi-channel reconstructor. If the parameter configuration cue has a first meaning, the configurator will look for further configuration information in its input data, while, when the parameter configuration cue has another meaning, the configurator performs a configuration setting of the multi-channel reconstructor based on information on a coding algorithm with which transmission channel data have been coded, so that it is ensured efficiently on the one hand and flexibly on the other hand that there will always be obtained a correct association between parameter data and decoded transmission channel data.