Wireless Multi-Device Audio Playback for Immersive 3D Sound
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Solution Overview
Problem
Conventional audio playback methods are limited by playback devices and environments, preventing high-quality 3D audio experiences and immersive audio services, especially when using external playback devices that are distance-limited.
Innovation Solution
An audio playback method and apparatus that utilizes multiple playback devices arranged around a reception end, such as in a vehicle, to decode and process audio signals wirelessly, selecting and transmitting specific audio signals to each device based on the listener's location, enabling 3D audio playback without distance limitations.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If conventional audio playback methods are used with single or limited playback devices, then the system is simple and easy to implement, but the audio quality and immersion experience are limited
Solution Approach 1:
The audio playback system is segmented into multiple independent playback devices (first playback device, second playback device, etc.) arranged around the reception end. Each device receives and plays back audio signals independently, enabling spatial audio distribution and immersive 3D audio experience while maintaining individual device simplicity
Solution Approach 2:
The patent transitions from conventional single-point audio playback to multi-dimensional spatial playback by arranging playback devices in three-dimensional space around the reception end. This dimensional expansion enables 3D audio positioning and immersive experiences without complicating individual device operation
2Adaptability or versatility
If external playback devices are used for audio playback, then playback flexibility is improved, but distance limitations restrict the audio experience quality
Solution Approach 1:
Multiple playback devices are merged into a coordinated system under the reception end's control. The reception end manages audio signal distribution to all devices, eliminating the traditional single remote device limitation and enabling high-quality audio playback regardless of individual device distance through unified system coordination
Solution Approach 2:
The reception end serves as an intermediary that receives audio streams, processes them into multiple audio signals, and distributes them to various playback devices. This intermediary role enables flexible audio playback to multiple devices at different distances without compromising quality, as the reception end coordinates all signal transmissions
3Adaptability or versatility
If multiple playback devices are arranged around the reception end for 3D audio playback, then audio immersion experience is improved, but system complexity increases
Solution Approach 1:
The complex 3D audio system is segmented into modular components: the reception end handles central processing and coordination, while each surrounding playback device operates as an independent unit. This segmentation reduces overall system complexity by distributing functions rather than requiring a monolithic complex structure
Solution Approach 2:
Each playback device in the array serves multiple functions: receiving audio signals from the reception end, processing them locally, and playing back spatially positioned audio. This multi-functionality at the device level simplifies the overall system architecture by eliminating the need for separate dedicated components for each function
Data Source
AI summary
An audio playback method includes: receiving, by a reception end, an audio stream from a transmission end, and decoding the audio stream to obtain a first audio signal decoded; and processing the first audio signal according to the N playback devices, to perform audio playback by the playback device.