Multichannel Audio Broadcasting Data Stream Segmentation
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Solution Overview
Problem
Current digital multimedia broadcasting systems are unable to provide high-quality multichannel audio services that are compatible with existing systems, limiting user demand for enhanced audio experiences.
Innovation Solution
The solution involves a transmitting apparatus and method that encodes both basic and multichannel audio signals, generates data streams describing their properties and positions, and packetizes them for transmission, while a receiving apparatus decodes these streams using property and position data to restore the audio signals, ensuring compatibility with conventional systems.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Manufacturing precision
If multichannel audio service is provided, then audio quality is improved, but compatibility with existing systems deteriorates
Solution Approach 1:
The audio service is divided into two separate data streams: a first data stream for basic audio (mono or stereo) and a second data stream for multichannel audio. This segmentation allows receivers to selectively process only the basic audio stream if they lack multichannel capability, ensuring backward compatibility while enabling high-quality multichannel audio for advanced receivers that can process both streams.
2Manufacturing precision
If multichannel audio stream is transmitted, then audio quality is improved, but data transmission complexity increases
Solution Approach 1:
The transmission system is designed with universal compatibility by encoding both basic and multichannel audio in separate data streams using standardized formats. This multi-functionality allows the same transmission infrastructure to serve both legacy receivers (processing only the first data stream) and advanced receivers (processing both data streams), eliminating the need for separate transmission systems.
3Measurement precision
If property and position data are included in data streams, then audio signal restoration is improved, but processing complexity increases
Solution Approach 1:
Property data (encoding parameters) and position data (spatial information) are pre-encoded and embedded within the respective data streams during the encoding phase. This preliminary action eliminates the need for complex real-time analysis and processing at the receiver end, as all necessary information for accurate audio signal restoration is already prepared and organized in the transmitted data streams.
Data Source
AI summary
Provided are a method and apparatus for transmitting digital multimedia broadcasting data, and a method and apparatus for receiving digital multimedia broadcasting data. A basic audio signal and a multichannel audio signal are encoded to generate a basic audio stream and a multichannel audio stream, and a first data stream describing property and position data of the basic audio stream and a second data stream describing property and position data of the multichannel audio stream are transmitted as independent streams. According to the performance of the receiving apparatus, an audio signal may be decoded by using just the first data stream only or both the first data stream and the second stream.