Audio Processing Device Sound Source Regulation
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Solution Overview
Problem
Current audio processing devices can only regulate two-channel signals globally, leading to distortion of all sound sources when attempting to modify a specific sound source, limiting user control over sound characteristics in games and movies.
Innovation Solution
An audio processing device employing beamforming, sound rotation, and end fire array techniques to isolate and regulate the sound signal characteristics of a designated object, allowing for independent manipulation of sound sources by detecting the included angle and forming directional beams to extract unidirectional signals, which are then processed to synthesize a regulated two-channel signal.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If global two-channel signal regulation is applied, then all sound sources can be regulated uniformly, but individual sound source control is lost and distortion occurs
Solution Approach 1:
The patent segments the mixed two-channel audio signal into individual sound source components using beamforming technology. By dividing the sound field into multiple directional beams, each corresponding to a specific sound source, the system enables independent regulation of each sound source while maintaining overall audio quality. This segmentation approach resolves the contradiction by allowing selective control without affecting other sound sources.
Solution Approach 2:
The patent applies local quality by enabling different regulation parameters to be applied to different sound sources. Each sound source can have its own volume, spatial position, and audio effects independently adjusted, while other sound sources remain unchanged. This localized control mechanism allows precise regulation of specific objects without distorting the overall audio landscape.
2Measurement precision
If beamforming and sound rotation techniques are used to isolate sound sources, then precise sound source control is achieved, but system complexity increases
Solution Approach 1:
The patent introduces intermediary processing stages including beamforming units, sound rotation modules, and object position detection mechanisms. These intermediaries bridge the gap between the raw two-channel signal and the final regulated output, enabling precise sound source isolation and control. The intermediary components systematically decompose and reassemble audio signals, achieving high precision while managing complexity through structured processing pipelines.
Solution Approach 2:
The patent adds spatial dimension processing by implementing sound rotation and beamforming in three-dimensional space. By transforming the audio processing from simple amplitude control to multi-dimensional spatial manipulation, the system achieves precise sound source localization and isolation. This dimensional approach allows accurate position detection and independent regulation of each sound source in the spatial audio field.
Data Source
AI summary
A method for regulating a sound source of a designated object and an audio processing device using same are provided. The method includes the following steps. An original two-channel signal is obtained. An included angle of the designated object with respect to an ear of a user is detected. A first beam and a second beam are respectively formed in a clockwise direction and a counterclockwise direction according to the included angle to obtain a bidirectional sound signal. A sound rotation process is performed, so that the ear is directed toward sound source of the designated object, and a rotated two-channel sound signal is obtained. A unidirectional sound signal towards the sound source is obtained. A sound signal characteristic of the designated object is obtained according to the bidirectional sound signal and the unidirectional sound signal and then is regulated to synthesize a regulated two-channel signal.