Slit Shaped Waveguide Front Sound Emission for TV Clarity
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Solution Overview
Problem
The placement of speakers on the back of frameless or minimal bezel TVs compromises sound clarity due to early reflections of sound waves, which can vary with the TV's location and user positioning.
Innovation Solution
A sound source with a slit-shaped waveguide is integrated into the display device, featuring a driver that generates pressurized air, a chamber to direct this air, and a slit-shaped exit to emit sound waves directly from the front, optimizing sound wave parameters for improved clarity and fidelity.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Length of moving object
If speakers are placed on the back of frameless or minimal bezel TVs to maintain thin design, then the TV thickness is reduced, but sound clarity deteriorates due to early reflections
Solution Approach 1:
The patent inverts the conventional speaker placement by moving the sound emission point from the back of the TV to the front. The compression driver and waveguide system directs sound waves to exit through the front surface of the display device, eliminating the early reflections problem that occurs with rear placement while maintaining the thin TV design.
Solution Approach 2:
The patent introduces a waveguide as an intermediary component between the compression driver and the front surface. This waveguide structure (including the tapered section and exit aperture) mediates the sound transmission, directing pressurized air and sound waves efficiently from the driver to the front emission point, solving both the thin design requirement and the sound clarity issue.
2Device complexity
If speakers are placed on the back of TVs, then the TV design is simplified, but sound wave parameters deteriorate due to reflections from surrounding surfaces
Solution Approach 1:
The patent inverts the sound emission direction from rear to front, allowing sound waves to propagate directly toward the user without reflecting off surrounding surfaces. This inversion eliminates the need for complex acoustic correction and maintains precise sound wave parameters while keeping the overall device design relatively simple.
Solution Approach 2:
The patent replaces the conventional dynamic speaker system with a compression driver that generates pressurized air. This mechanical substitution creates more direct control over sound wave generation and propagation, improving sound wave parameters while maintaining design simplicity through the use of acoustic waveguides rather than complex electronic signal processing.
3Length of moving object
If conventional speakers are used in thin TVs, then the TV remains thin, but sound clarity is compromised due to location-dependent early reflections
Solution Approach 1:
The patent inverts the sound emission location from the back to the front of the TV. This fundamental inversion makes sound clarity independent of TV placement and user positioning, as sound waves now travel directly from the front emission point to the user without reflecting off surrounding surfaces, thereby improving reliability of sound quality.
Solution Approach 2:
The patent uses a compression driver that creates pressurized air copies of the audio signal, which then travel through the waveguide system. This copying mechanism allows the sound waves to be generated and directed with high fidelity through the thin TV structure, maintaining both thinness and reliable sound clarity.
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
This solution maintains the thin design of frameless TVs while significantly enhancing sound clarity and fidelity by directly emitting sound waves from the front, reducing early reflections and improving overall audio quality.
Implementation Method 1
a driver configured to receive audio signal current and generate pressurized air
Implementation Method 2
a chamber coupled to the driver and configured to direct the pressurized air from the driver
Implementation Method 3
a slit shaped exit coupled to the chamber and configured to receive the pressurized air from the chamber and to emit sound waves
Data Source
AI summary
Disclosed herein are system, apparatus, article of manufacture, method and/or computer program product embodiments, and/or combinations and sub-combinations thereof, for a sound source with slit shaped waveguide. An example embodiment of the sound source includes a driver configured to receive audio signal current and generate pressurized air and a chamber coupled to the driver and configured to direct the pressurized air from the driver. The sound source further includes a slit shaped exit coupled to the chamber and configured to receive the pressurized air from the chamber and to emit sound waves.