Orientation-Responsive Acoustic Array for Single-Cabinet Surround Sound
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Solution Overview
Problem
Conventional audio systems with multiple devices struggle to maintain the spatial effect of surround sound due to the co-location of acoustic drivers in a single cabinet, which degrades the desired audio experience.
Innovation Solution
An audio device with a rotatable casing that adjusts the orientation of its acoustic drivers to form interference arrays, generating destructive interference in specific directions based on its orientation relative to the force of gravity, thereby optimizing sound output.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Device complexity
If multiple acoustic drivers are co-located in a single cabinet to reduce device quantity, then device complexity is reduced, but the spatial effect of surround sound is degraded
Solution Approach 1:
The audio device incorporates a rotatable casing that can change orientation between horizontal and vertical positions. The system dynamically switches between different acoustic driver configurations based on the detected orientation, enabling the same physical device to provide different spatial sound patterns in different orientations, thus maintaining spatial effect quality while using a single cabinet
Solution Approach 2:
The system changes the operational parameters of the acoustic drivers based on orientation. In horizontal orientation, drivers are configured to provide front and rear sound channels; in vertical orientation, the configuration switches to provide left and right sound channels. This parameter switching allows the single cabinet to adapt its acoustic output characteristics to maintain spatial surround sound effect regardless of physical orientation
2Device complexity
If acoustic drivers are fixed in a single orientation, then device structure is simplified, but adaptability to different listening positions is reduced
Solution Approach 1:
The casing is designed to be rotatable rather than fixed, allowing it to dynamically change between horizontal and vertical orientations. An orientation detection device monitors the current position and triggers automatic switching of acoustic driver configurations, enabling the device to adapt to different installation scenarios and listening positions without increasing structural complexity
Solution Approach 2:
The single audio device is designed to perform multiple functions by switching between different acoustic configurations. The same acoustic drivers can provide front-rear surround sound in horizontal orientation or left-right stereo sound in vertical orientation, making the device universally adaptable to different listening environments and positions
3Area of stationary object
If acoustic drivers are co-located in a single cabinet, then installation space is reduced, but the spatial distribution of sound channels is degraded
Solution Approach 1:
The system uses dynamic orientation switching to overcome the spatial limitation of co-located drivers. By rotating the casing and switching acoustic configurations, the device creates the perception of spatially distributed sound channels (front, rear, left, right) from a single physical location, maintaining surround sound spatial effect without requiring multiple distributed devices
Solution Approach 2:
The invention exploits the orientation dimension (horizontal vs. vertical) as an additional degree of freedom. By switching between orientations, the system effectively creates different spatial sound distributions from the same physical driver locations, compensating for the lack of physical separation between drivers through temporal and orientational variation
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 enhances the spatial effect of audio output by dynamically adjusting sound radiation patterns, providing a more immersive listening experience comparable to traditional multi-device setups while maintaining a compact form.
Implementation Method 1
the plurality of acoustic drivers are operated to form a first acoustic interference array that generates destructive interference in a first direction from the plurality of acoustic drivers or a second acoustic interference array that generates destructive interference in a second direction from the plurality of acoustic drivers
Data Source
AI summary
An audio device incorporates a plurality of acoustic drivers and employs them to form either a first acoustic interference array generating destructive interference in a first direction from the plurality of acoustic drivers or a second acoustic interference array generating destructive interference in a second direction from the plurality of acoustic drivers in response to the orientation of the casing of the audio device relative to the direction of the force of gravity.