Virtual Sound Source Formation via Audio Signal Superposition
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Solution Overview
Problem
Existing electronic devices face design and assembly challenges due to the need for precise placement of sound generating units to ensure optimal audio output, limiting internal space planning and increasing complexity.
Innovation Solution
The electronic device employs at least two sound generators disposed in the device body, controlled by a controller to superimpose audio signals and form a virtual sound source at a preset position, allowing for flexible placement and enhanced directivity without the need for precise positioning.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If sound generating units are placed at designated positions to ensure optimal audio output and directivity, then audio output quality and directivity are improved, but device complexity and assembly difficulty increase due to precise placement requirements
Solution Approach 1:
The patent creates a virtual sound source that replicates the acoustic effect of a physically positioned sound generator. By using multiple sound generators distributed across the device body that emit superimposed audio signals, the system copies the functional outcome of a precisely positioned single sound generator without requiring precise physical placement, thereby reducing assembly complexity while maintaining audio quality
Solution Approach 2:
The patent replaces the mechanical positioning system with a signal processing system. Instead of relying on precise mechanical placement of sound generators to achieve desired directivity and audio quality, the system uses electronic signal superimposition and phase control to create the equivalent acoustic effect, substituting mechanical precision requirements with electronic control
2Reliability
If sound generating units are placed at designated positions to meet usage scenario requirements such as privacy during calls, then audio directivity and privacy are improved, but internal space planning flexibility is reduced
Solution Approach 1:
The patent makes sound generators universal by enabling them to function as a distributed array system rather than requiring dedicated designated positions. Each sound generator can contribute to the virtual sound source from any location in the device body, allowing the same hardware configuration to serve multiple functional requirements (audio output, privacy, space efficiency) without needing specialized placement for each function
Solution Approach 2:
The patent transitions from one-dimensional precise linear positioning to three-dimensional distributed spatial arrangement. By utilizing the full three-dimensional space within the device body and controlling phase relationships across multiple dimensions, the system achieves audio directivity through spatial distribution rather than precise one-dimensional positioning, thereby increasing space planning flexibility
Applied Scientific Principles
This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.
Function Achieved in This Case
This approach reduces design and assembly difficulties by enabling sound generators to be placed anywhere, improving audio output directivity and flexibility while maintaining effective sound source positioning, even when not at designated positions.
Implementation Method 1
the audio signals output by the at least two sound generators are superimposed to form a virtual sound source at a preset position
Data Source
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AI summary
The disclosure relates to an electronic device and a method of outputting audio. The electronic device includes a device body; at least two sound generators disposed in the device body; and a controller disposed in the device body. The controller is connected with the at least two sound generators to control each of the sound generators to output audio signals. The audio signals output by the at least two sound generators are superimposed to form a virtual sound source at a preset position.