Audio Conversion Device for Multi-Channel Compressed Audio
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Solution Overview
Problem
Current audio capture devices lack multi-channel decoders for compressed audio formats, resulting in loss of original sound quality when capturing multi-channel content, as they typically convert compressed audio to uncompressed PCM internally, leading to a loss of authentic, high-quality audio experience.
Innovation Solution
An audio conversion method and device that determines the audio compression format and performs data-burst encapsulation or decapsulation as needed, allowing for the transmission of compressed audio in its original format, enabling authentic recording of multi-channel content by choosing appropriate transmission settings based on the audio format information.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of manufacture
If compressed audio is decoded internally before transfer to maintain compatibility, then device complexity is reduced, but audio quality is degraded due to loss of multi-channel information
Solution Approach 1:
The patent introduces an audio conversion device as an intermediary component between the audio source and the capture device. This converter handles the format conversion externally, allowing the capture device to receive and process compressed audio directly without requiring internal decoding capabilities, thus resolving the contradiction between device complexity and audio quality preservation
Solution Approach 2:
The patent creates a copy of the audio data in its original compressed format through the audio conversion device, enabling the capture device to store and process the uncompressed compressed audio stream. This copying approach allows the original audio quality to be maintained while the capture device itself remains relatively simple
2Loss of information
If multi-channel compressed audio is transmitted directly, then audio quality is preserved, but compatibility with existing capture devices is reduced
Solution Approach 1:
The patent changes the parameter of audio format representation by introducing a new transmission format (data-burst encapsulation) that can carry compressed audio information in a way that is compatible with existing capture device interfaces. This parameter transformation allows direct transmission of compressed audio while maintaining compatibility
Solution Approach 2:
The audio conversion device serves as a mediator that translates between the compressed audio format and the capture device's expected input format, enabling compatible communication without requiring the capture device to natively support compressed audio formats
3Adaptability or versatility
If compressed audio is converted to PCM internally, then capture device compatibility is improved, but the authentic multi-channel sound quality is lost
Solution Approach 1:
The patent makes a copy of the compressed audio data in its original multi-channel format through external conversion, allowing the capture device to store and process the authentic sound quality without requiring internal decoding. This copy preserves the original audio information while maintaining compatibility
Solution Approach 2:
The audio conversion device performs the format conversion preliminarily before the audio reaches the capture device, so that the compressed audio is already prepared in the appropriate format for transmission and storage, eliminating the need for internal decoding while preserving quality
Data Source
AI summary
An audio conversion method includes steps as follows. An audio conversion device receives an audio, and obtains an audio compression information according to the audio; a host receives the audio compression information, chooses a transmission setting corresponding to the audio conversion device according to the audio compression information, and starts streaming; the audio conversion device performs corresponding encapsulation and transmission on the audio according to the transmission setting; the host receives the audio, and determines whether the audio needs parsing according to the transmission setting or the audio compression information; and the host parses the audio to obtain an audio format information; the host determines that the audio is a compressed audio with data-burst encapsulation according to the audio format information, and then performs data-burst decapsulation on the compressed audio with data-burst encapsulation, to obtain the compressed audio.