Directional Audio Processing Using Angle Features for Noise Suppression
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Solution Overview
Problem
Existing audio playback systems suffer from poor audio quality due to the presence of non-target audio, leading to a degraded playback effect.
Innovation Solution
A method and apparatus that utilize multiple audio capture devices to determine an angle feature indicating the proportion of a sound source in a target direction, allowing for the identification and enhancement of target audio while suppressing non-target audio.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If multiple audio capture devices are used to capture audio in space, then the ability to identify target audio is improved, but the device complexity increases
Solution Approach 1:
The audio processing is segmented into distinct functional modules: angle feature determination module, target audio identification module, and audio enhancement module. Each module handles a specific aspect of the audio processing task, making the complex system more manageable and maintainable while achieving high target audio identification accuracy
Solution Approach 2:
Angle features are introduced as an intermediary parameter to bridge the gap between raw audio signals from multiple devices and the final target audio identification. The angle feature serves as a mediator that encodes spatial information, enabling the system to distinguish target audio from non-target audio without requiring direct complex analysis of all audio signals
2Measurement precision
If angle feature determination is performed based on multiple first audios, then the audio processing accuracy is improved, but the computation time increases
Solution Approach 1:
Angle features are determined preliminarily from the multiple first audios before the actual target audio identification and enhancement processes. By pre-computing the angle features that capture the essential spatial distribution information, the system avoids redundant computations during subsequent processing stages, thereby reducing overall computation time while maintaining high accuracy
Data Source
AI summary
The disclosure provides a method, apparatus and terminal device for audio processing, and the method includes: obtaining a plurality of first audios captured by a plurality of audio capture devices; determining an angle feature for indicating a proportion of a sound source in a target direction in each first audio based on the plurality of first audios and the target direction; determining a second audio associated with the target direction based on the plurality of first audios and the angle feature; and playing the second audio.