Bed Stereophonic Device Using Single Loudspeaker and Acoustic Reflection
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Solution Overview
Problem
Conventional stereophonic bed designs require multiple loudspeakers and complex audio signal processing to reproduce stereophonic sound, making them complicated and expensive.
Innovation Solution
A stereophonic device for a bed that uses a single loudspeaker on the lower side, with sound waves propagating both directly and being reflected from adjacent objects like the floor, creating a stereophonic effect without the need for multiple loudspeakers or complex processing.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If multiple loudspeakers are used to reproduce stereophonic sound, then the stereophonic effect is improved, but the device complexity and cost increase
Solution Approach 1:
The patent uses a wave reflecting object (intermediary) to create reflected sound waves that, combined with direct sound waves from a single loudspeaker, produce stereophonic effect. This mediator approach eliminates the need for multiple loudspeakers while maintaining stereophonic sound reproduction quality
Solution Approach 2:
The invention creates a virtual copy of the stereophonic effect by using reflected sound waves that mimic the behavior of multiple loudspeakers. The reflected waves replicate the spatial audio experience without requiring physical multiple loudspeaker units
2Reliability
If multiple loudspeakers are used to reproduce stereophonic sound, then the stereophonic effect is improved, but the manufacturing cost increases
Solution Approach 1:
The patent replaces expensive multiple loudspeaker systems with a single loudspeaker combined with readily available wave reflecting objects (like floors or walls). This substitution dramatically reduces manufacturing cost while maintaining the stereophonic effect through acoustic reflection
3Reliability
If complex audio signal processing is used to achieve stereophonic sound, then the stereophonic effect is improved, but the device complexity increases
Solution Approach 1:
The patent replaces complex electronic audio signal processing systems with a simple acoustic reflection mechanism. Instead of using sophisticated digital signal processing to create stereophonic effect, the invention uses natural acoustic wave reflection from physical objects, eliminating the need for complex processing circuitry
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 simplifies the design, reduces the number of loudspeakers required, and eliminates the need for complex audio signal processing, providing an inexpensive and effective means to produce stereophonic sound.
Implementation Method 1
The loudspeaker is adapted to generate direct sound waves radially propagating therefrom
Implementation Method 2
another part of the direct sound waves propagate toward the wave reflecting object, reflected by the wave reflecting object and becoming a reflected sound waves
Data Source
AI summary
A stereophonic device for a bed disposed adjacent to at least a wave reflecting object is provided. The bed has an upper side and a lower side. The stereophonic device includes a loudspeaker disposed on the lower side of the bed. The loudspeaker is adapted to generate direct sound waves radially propagating therefrom. A part of the direct sound waves propagate through the bed toward the upper side of the bed, and another part of the direct sound waves propagate toward the wave reflecting object, reflected by the wave reflecting object and becoming a reflected sound waves. The reflected sound waves then propagate toward the upper side of the bed and demonstrate stereophonic sound along with the direct sound waves propagating theretoward.