Speaker Channel Switching for Foldable Device Stereo Orientation
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Solution Overview
Problem
Electronic devices with multiple speakers experience a deterioration in stereo play effect when changing states, such as rotation or folding, due to mismatched sound channel orientations with human ears.
Innovation Solution
A method and apparatus for sound channel switching that adjusts sound channel signals based on state change parameters like folding, rotation, or scaling angles, fusing signals to ensure speakers play audio matching their new orientations.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If the electronic device changes orientation (rotation or folding), then the device can be used in different positions, but the sound channel signals played by speakers do not match human ears, affecting stereo play effect
Solution Approach 1:
The patent applies dynamics by making the sound channel assignment dynamic rather than fixed. The system continuously monitors device orientation changes and dynamically adjusts which speakers play which sound channels based on the current orientation state, ensuring optimal stereo playback experience regardless of device position
Solution Approach 2:
The patent changes the parameter of sound channel mapping based on orientation parameters. When device orientation changes (rotation or folding), the system modifies the mapping relationship between speakers and sound channels according to the new orientation state, thereby maintaining accurate spatial audio perception
2Reliability
If sound channel switching is implemented to maintain stereo effect, then audio quality is improved, but the system complexity increases due to signal processing requirements
Solution Approach 1:
The patent segments the audio signal processing into independent channels for each speaker. Instead of processing the entire audio stream as a whole, the system separately manages and switches sound channel signals for each speaker individually, simplifying the processing complexity while maintaining stereo effect
Solution Approach 2:
The system incorporates feedback mechanisms to monitor device orientation and automatically adjust sound channel assignments. This feedback loop enables the system to adapt to orientation changes without requiring complex manual configuration or user intervention, reducing overall system complexity
Data Source
AI summary
A channel switching method and apparatus, and an electronic device, and relates to the field of communication technologies. The method includes: in case that an electronic device plays audio and its target state changes, obtaining its state change parameter, the state change parameter including a folding angle, a rotation angle, or a scaling amplitude; according to the state change parameter, fusing first and second channel signals in a first manner to obtain a third channel signal, fusing the first and second channel signals in a second manner to obtain a fourth channel signal; controlling a first speaker playing the first channel signal to switch to the third channel signal, and controlling a second speaker playing the second channel signal to switch to the fourth channel signal, where before the channel signal switching, channels played by the first and second speakers do not match orientations of the speakers.