Display Speaker Segmentation for Sound Localization
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Solution Overview
Problem
In large-size display apparatuses, the location of a person speaking on the screen and the actual sound generation do not coincide due to the placement of speakers, leading to a discrepancy between the visual image and perceived sound location.
Innovation Solution
A display apparatus with a main speaker and an auxiliary speaker on its rear surface, where the auxiliary speaker outputs sound in a direction inclined from the rear surface, enhancing the perceived sound location and improving the sense of space by reflecting sound off surrounding objects.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Shape
If the speaker is provided on the lower end of the display panel for a thin bezel design, then the device achieves a thin bezel design and compact structure, but the location of sound generation does not coincide with the location of the person speaking on the screen
Solution Approach 1:
The patent divides the speaker system into multiple independent speaker units (first speaker, second speaker, third speaker, fourth speaker) positioned at different locations on the display panel. This segmentation allows each speaker to handle specific sound channels and directions, resolving the conflict between compact design and accurate sound localization by distributing sound generation across multiple points rather than relying on a single lower-positioned speaker.
Solution Approach 2:
The patent introduces vertical dimension to sound output by positioning speakers at the lower end and upper end of the display panel in addition to side positions. This three-dimensional speaker arrangement creates sound images that can be localized both horizontally and vertically, aligning the perceived sound location with the visual content on screen while maintaining the thin bezel design.
2Shape
If speakers are positioned to achieve thin bezel design, then the structural compactness is improved, but the sense of space and sound realism are degraded
Solution Approach 1:
The speaker system is segmented into multiple independent units positioned at different locations (lower left, lower right, upper left, upper right ends of the display panel). Each speaker can be controlled independently to create directional sound images, enhancing the sense of space and sound realism while maintaining the compact thin-bezel structure.
Solution Approach 2:
The patent adds vertical dimension to the speaker arrangement by placing speakers at both lower and upper ends of the display panel, in addition to side positions. This creates a three-dimensional sound field that enhances the sense of space and immersion, compensating for the limitations of the compact thin-bezel design.
3Device complexity
If a single main speaker is used, then the device structure is simple, but the sound output cannot provide high-realism and accurate sound location
Solution Approach 1:
The single main speaker is replaced with multiple segmented speaker units (first, second, third, and fourth speakers) positioned at different locations on the display panel. Each speaker can be independently controlled to generate sound in specific directions, enabling accurate sound location and high-realism audio output while maintaining relatively simple device structure.
Solution Approach 2:
The patent transitions from a single-point sound source to a distributed multi-dimensional speaker array. By positioning speakers at lower and upper ends as well as side positions, the system creates three-dimensional sound images that accurately match the visual content on screen, significantly improving sound location accuracy.
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
The solution effectively aligns the perceived sound location with the visual image on the screen, enhancing the realism of sound output and extending the perceived space by directing sound in multiple directions, thus resolving the discrepancy between image and sound.
Implementation Method 1
improving the sense of space by reflecting sound off surrounding objects
Implementation Method 2
an acoustic wave traveling from a location of a person speaking on the screen to a listener's ear
Data Source
AI summary
A display apparatus including a display panel configured to display an image in a front direction; a main speaker provided on a rear surface of the display panel; and an auxiliary speaker provided on the rear surface of the display panel, the auxiliary speaker being configured to output a sound in a rear direction opposing the front direction.