Projector Speaker Layout for Multi-Directional Sound Coverage
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Solution Overview
Problem
Existing projectors have a single sound propagation direction, which limits the user's position and results in varying sound effects when positioned differently around the projector, requiring volume adjustments and excessive consumption.
Innovation Solution
The audio-visual device features sky speakers on the top surface and side speakers on the surrounding surface, with the sky speakers having an upward sound propagation direction, ensuring consistent sound effects regardless of the user's position, and combined with side speakers for enhanced sound diversity.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If speakers are arranged on the side surface or front surface facing the projection surface, then the device structure is simple, but the sound effect varies significantly when users are at different positions around the projector
Solution Approach 1:
The patent introduces a new spatial dimension for speaker arrangement by placing speakers on the top surface of the projector body in addition to the front surface. This multi-dimensional speaker configuration enables sound to propagate in multiple directions (upward and forward), allowing users to enjoy consistent sound quality regardless of their position around the device, thereby resolving the contradiction between sound effect adaptability and structural complexity.
2Adaptability or versatility
If the volume is turned up to compensate for reduced speaker volume when user and speaker are on different sides, then the sound effect is improved, but energy consumption becomes excessive
Solution Approach 1:
By adding top surface speakers that propagate sound upward, the system creates additional sound paths to users. This multi-directional sound propagation reduces the need to increase volume on existing speakers, thereby maintaining sound effect quality while avoiding excessive energy consumption.
3Adaptability or versatility
If a single sound propagation direction is used, then the device structure is simple, but the user position is limited
Solution Approach 1:
The patent implements sound propagation in multiple dimensions by placing speakers on both the front surface (forward propagation) and top surface (upward propagation). This multi-directional sound distribution allows users to enjoy optimal sound quality from various positions around the projector, significantly improving user position flexibility without requiring complex adjustable mechanisms.
Solution Approach 2:
The speaker system is segmented into multiple independent speaker units positioned at different locations and orientations on the projector body. This segmentation allows each speaker to serve a specific directional function, collectively providing omnidirectional sound coverage and enhancing user position flexibility.
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 device maintains stable sound effects across different user positions and enhances sound diversity through multiple sound propagation directions, improving user experience.
Implementation Method 1
a sky speaker and a side speaker, where the sky speaker is arranged on the top surface... a sound propagation direction of the sky speaker is vertically upward or inclined upward
Implementation Method 2
the side speaker is arranged on the surrounding surface... the side speaker sound chamber is connected to the side speaker body
Data Source
Figure 1~2
AI summary
The present application provides an audio-visual device. By providing loudspeakers on a top surface and a peripheral surface, respectively, the diversity of sound propagation directions is increased, so that the problem that the location of a user is limited by a single sound propagation direction is solved. The audio-visual device comprises: a device body, wherein the device body comprises a top surface and a peripheral surface surrounding the top surface; and sky loudspeakers and a side loudspeaker, wherein the sky loudspeakers are arranged on the top surface of the device body, and the side loudspeaker is arranged on the peripheral surface of the device body. The present application is mainly used for projecting images.