Spliced Display Sound Reception for Directional Stereo Signals
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Solution Overview
Problem
Display devices with integrated sound reception units produce mono-channel sound signals, lacking directionality and unable to create a multi-channel stereo effect, even when arranged in a widescreen configuration.
Innovation Solution
A display apparatus with multiple sound reception units on connected display devices, controlled by a sound reception processor to generate directional sound signals, synthesizing them into multi-channel stereo signals.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If sound reception units are placed on display devices, then sound reception capability is provided, but the sound signals are synthesized into mono-channel signals without directionality
Solution Approach 1:
The system segments the sound reception function across multiple display devices, with each device having its own sound reception units. The sound reception processor divides the treatment of sound signals from different devices, assigning specific units to specific devices based on their spatial positions, thereby preserving directional information that would be lost in a unified mono-channel processing approach
Solution Approach 2:
The invention transitions from processing sound signals in a single dimension (mono-channel) to processing them in multiple dimensions (multi-channel stereo). By considering the spatial arrangement of display devices and the directional characteristics of sound reception units, the system adds spatial dimensionality to sound signal processing, enabling preservation of time differences, sound pressure differences, and phase differences between channels
2Area of stationary object
If multiple display devices are arranged side by side to construct widescreen display, then display area is increased, but sound signals still cannot provide multi-channel stereo effect
Solution Approach 1:
The system merges the sound reception capabilities of multiple display devices into a unified multi-channel stereo system. By combining the directional sound signals from different display devices through the sound reception processor, the invention creates a synergistic effect where the collective output provides multi-channel stereo capability that none of the individual devices could achieve alone
Solution Approach 2:
The invention applies local quality by assigning different functional roles to sound reception units based on their specific spatial locations. Each sound reception unit is selectively activated based on its position relative to the sound source and other units, optimizing the directional characteristics of each channel to contribute appropriately to the overall multi-channel stereo effect
3Ease of operation
If sound reception units are placed on one side or both sides of display device, then sound reception is enabled, but directionality and stereo effect cannot be created
Solution Approach 1:
The system exploits asymmetric placement of sound reception units on display devices to create directional sensitivity. By positioning units at different locations (one side or both sides) and treating their outputs differently in the processing stage, the system can distinguish sound sources from different directions, transforming what would otherwise be symmetric, non-directional reception into asymmetric, directionally-sensitive channels
Data Source
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AI summary
A display apparatus(10) includes a first display device(12) having two first sound reception units(20), a second display device(14) having two second sound reception units(22), and a sound reception processor(18). The second display device(14) is connected to a side of the first display device(12). The sound reception processor(18) is coupled to the first sound reception units(20) and the second sound reception units(22). The sound reception processor(18) turns on at least one of the first sound reception units(20) to receive sound in a first normal direction of the first display device(12) for generating a first directional sound signal, turns on at least one of the second sound reception units(22) to receive sound in a second normal direction of the second display device(14) for generating a second directional sound signal, and generates a stereo signal according to the first directional sound signal and the second directional sound signal.