Audio Decoding with Residual Layers for Higher Reconstruction Quality
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Solution Overview
Problem
Existing audio decoding processes prioritize efficiency over quality, resulting in significant degradation of decoded audio.
Innovation Solution
An audio decoding method that utilizes residual layers on the decoding side to calculate residuals of encoding features, reconstructing audio signals to improve quality.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If existing decoding processes prioritize efficiency, then decoding speed is improved, but audio quality deteriorates significantly
Solution Approach 1:
The decoding process is segmented into multiple stages: initial decoding to obtain encoding features, residual calculation stage, and audio feature reconstruction stage. This segmentation allows different parts of the process to be optimized independently, maintaining speed while improving quality.
Solution Approach 2:
The encoding features are decoded preliminarily first, then used to calculate residuals which are subsequently applied to reconstruct the audio features. This preliminary action enables the system to prepare necessary components before final reconstruction, balancing efficiency and quality.
2Manufacturing precision
If residual layers are utilized to calculate residuals of encoding features, then audio quality is improved, but computational complexity increases
Solution Approach 1:
Encoding features serve as an intermediary representation that captures essential audio information in a compressed form. These features act as a mediator between the compressed bitstream and the final audio reconstruction, enabling quality improvement without proportionally increasing complexity.
Solution Approach 2:
The system changes parameters by working in the feature domain rather than directly in the audio signal domain. By performing residual calculation and reconstruction operations on encoding features rather than raw audio samples, the computational complexity is managed while maintaining audio quality.
Data Source
AI summary
An audio decoding method, performed by an electronic device includes, obtaining an encoded audio bitstream; decoding the encoded audio bitstream to obtain an encoding feature; using at least one residual layer on a decoding side to calculate a residual of the encoding feature to obtain an audio feature; and obtaining a reconstructed audio signal corresponding to the encoded audio bitstream by reconstructing the audio feature.