Modular Display Speaker Control for Sound Interference Reduction
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Solution Overview
Problem
Large display systems with integrated speakers experience sound wave interference, leading to distorted sound signals due to constructive and destructive interference between speakers separated by a distance, which is exacerbated by the enlargement of the display system.
Innovation Solution
A display apparatus that includes a processor to acquire location information and adjust the output set value of its internal speakers based on this information, controlling the speakers to minimize interference by outputting different pitch ranges or sound channels, thereby reducing distortion.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If multiple speakers are disposed at a distance from each other in an enlarged display system, then the display system can provide integrated sound output without external speakers, but sound wave interference occurs causing distorted sound signals
Solution Approach 1:
The patent assigns different frequency ranges to different speakers based on their spatial positions within the display system. Each speaker is configured to output specific pitch ranges (tweeter for high frequencies, mid-range for middle frequencies, woofer for low frequencies) according to its location, thereby preventing sound wave interference while maintaining integrated sound output capability.
Solution Approach 2:
The processor dynamically adjusts the output parameters of each speaker based on location information. By changing the frequency response parameters and output levels of individual speakers according to their positions, the system eliminates constructive and destructive interference patterns that would otherwise occur with uniform speaker output.
2Ease of operation
If speakers output the same sound signal, then the sound output is simple to control, but constructive and destructive interference results in distorted sound perception
Solution Approach 1:
Different speakers are assigned different frequency ranges based on their locations within the display apparatus. This spatial differentiation of audio output ensures that each speaker contributes to a specific portion of the frequency spectrum, preventing interference while maintaining automated control through the processor.
Solution Approach 2:
The audio frequency spectrum is segmented and assigned to different speakers based on their positions. The processor divides the sound signal into multiple frequency channels, with each speaker handling a specific segment (high, mid, or low frequencies), thereby eliminating interference while preserving sound quality.
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 system effectively minimizes sound wave interference by adjusting speaker output based on location, ensuring non-distorted sound signals are provided to users, and constructs a multi-channel speaker environment without external speakers.
Implementation Method 1
a speaker configured to generate sounds associated with the images displayed on the display system
Implementation Method 2
a problem of sound wave interference (i.e., constructive and destructive interference) may occur and may result in a distorted sound signal as perceived by a user
Data Source
AI summary
A display apparatus is disclosed. The display apparatus includes a display, a speaker, and a processor configured to acquire location information of the display apparatus inside a modular display apparatus including a plurality of display apparatuses, change an output set value of the speaker based on the location information, and control the speaker to output a sound signal received from an external apparatus based on the changed output set value, wherein the external apparatus includes at least one of another display apparatus adjacent to the display apparatus among the plurality of display apparatuses or a source apparatus.