Electronic Device Upmixing Mono to Stereo Signal During Handover
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Solution Overview
Problem
Existing communication technologies fail to maintain optimal stereo call quality when a user's device switches between network environments, often resulting in a degradation of sound quality due to handover events that convert stereo calls to mono calls.
Innovation Solution
An electronic device equipped with a communication circuit and processor that upmixes a mono signal to a stereo signal using extracted parameters, ensuring continuous optimal stereo call service even during network handovers.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If the electronic device communicates with the network in a stereo type, then the sound quality is improved, but the network compatibility deteriorates when handover occurs
Solution Approach 1:
The processor extracts parameters from the stereo signal in advance before handover occurs. These extracted parameters are stored and ready to be used for reconstructing the stereo signal after handover, ensuring continuous stereo call quality without interruption during network switching.
Solution Approach 2:
The processor creates a copy of the essential stereo information by extracting parameters from the stereo signal. This parameter copy can be used to regenerate the stereo signal after handover, eliminating the need to transmit the full stereo signal continuously and enabling seamless switching between mono and stereo modes.
2Adaptability or versatility
If the stereo call is converted to mono call during handover, then the network adaptability is improved, but the sound quality deteriorates
Solution Approach 1:
The processor changes the representation parameters of the audio signal by extracting essential stereo parameters from the full stereo signal. These compressed parameters are sufficient for reconstructing the stereo signal later, enabling efficient transmission during handover while preserving the ability to restore high-quality stereo sound afterward.
Solution Approach 2:
The parameter extraction is performed in advance before the handover converts the call to mono. This preliminary extraction ensures that when the device returns to stereo mode after handover, the stereo signal can be quickly reconstructed without quality loss, maintaining continuous high-quality audio experience.
3Ease of operation
If the audio signal is transmitted in stereo type, then the user experience is improved, but the data transmission efficiency deteriorates
Solution Approach 1:
The processor extracts only the essential parameters from the full stereo signal for transmission during handover. This extraction removes redundant information while retaining the core stereo characteristics, significantly reducing data transmission requirements while maintaining the ability to reconstruct high-quality stereo sound at the receiving end.
Solution Approach 2:
The system transforms the audio signal from its full stereo representation to a compressed parameter representation. This parameter transformation reduces the amount of data that needs to be transmitted during handover, improving transmission efficiency while preserving the ability to restore the original stereo quality for optimal user experience.
Data Source
AI summary
An electronic device and a method for converting a call type of the electronic device are provided. Accordingly, it is possible to provide optimal sound quality and impression of space to a user while providing an optimal stereo call service by upmixing a mono signal to a stereo signal even if stereo call is converted into mono call due to the environment change like a handover while the electronic device performs stereo call with an external electronic device.