Upward Firing Speaker Automatic Elevation Adjustment
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Solution Overview
Problem
Traditional audio output devices struggle to simulate a full three-dimensional sound effect in household environments due to their inability to adapt to varying room conditions, such as volume and ceiling materials, which diminishes the audio atmosphere.
Innovation Solution
An audio output system that includes an upward firing speaker capable of automatically adjusting its firing direction by outputting test audio signals at multiple angles, selecting a preset angle based on reception information, and using correction values from a mode lookup table to optimize sound delivery for different audio output modes.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If upward firing speakers are used to create three-dimensional sound effects in household environments, then the audio atmosphere is improved, but the system cannot adapt to different environmental conditions such as room volume and ceiling materials
Solution Approach 1:
The patent implements dynamic adjustment of the upward firing speaker's elevation angle based on detected environmental parameters. The system automatically modifies the firing direction to compensate for variations in room volume, ceiling height, and ceiling material absorption characteristics, ensuring consistent three-dimensional sound effects across different household environments.
Solution Approach 2:
The system employs feedback mechanisms where the audio output device detects environmental conditions (such as room acoustics, ceiling material properties, and spatial dimensions) and uses this information to automatically adjust the speaker's elevation angle. This closed-loop control ensures the optimal sound distribution is maintained despite environmental variations.
2Device complexity
If fixed elevation angles are used for upward firing speakers, then the device complexity is reduced, but the three-dimensional sound effect is diminished when environmental conditions differ from design assumptions
Solution Approach 1:
The audio output device performs self-adjustment by automatically detecting its own environmental conditions and modifying its operating parameters accordingly. The system self-calibrates the elevation angle based on detected room characteristics, eliminating the need for manual configuration or complex user intervention while maintaining optimal sound performance.
Solution Approach 2:
The system dynamically changes the elevation angle parameter of the upward firing speaker based on detected environmental conditions. By automatically modifying this critical parameter, the system adapts to different household environments without requiring physical reconfiguration or complex mechanical adjustments, thus maintaining simplicity while improving adaptability.
3Adaptability or versatility
If the upward firing speaker outputs test audio signals at multiple angles to determine the optimal preset angle, then the adaptability to environmental conditions is improved, but the time required for initial setup and calibration is increased
Solution Approach 1:
The system performs preliminary testing by outputting test audio signals at multiple elevation angles during an initial calibration phase. This preliminary action allows the system to detect environmental conditions and determine the optimal preset angle before normal operation begins, ensuring that subsequent audio playback benefits from optimized sound distribution without requiring ongoing manual adjustment.
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 enhances the three-dimensional sound experience by adapting to specific environmental conditions, ensuring a better listening experience regardless of the household setup.
Implementation Method 1
via using audio output devices capable of upwardly firing sounds to ceilings, sounds are reflected to audiences, making users sense a three-dimensional sound effect
Data Source
AI summary
A system, an audio output device, and a method for automatically adjusting a firing direction of an upward firing speaker are disclosed. The system includes the audio output device and an audio receiver. The audio output device includes the upward firing speaker. During testing, the device controls the speaker to output a test audio signal at each of multiple testing angles of elevation. The audio receiver within a receiving area receives the test audio signal and generates a received audio waveform for creating reception information. The audio output device selects one testing angle as a preset angle of elevation according to the reception information. At playing, the audio output device is controlled by a mode selection signal and chooses a correction value from a mode lookup table to adjust the preset angle. The speaker is controlled to output an audio signal at the adjusted preset angle.