Rotating Sound Box Positioning for Indoor Crosstalk Cancellation
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Solution Overview
Problem
Existing methods for simulating a realistic sound image space in indoor environments, such as 5.1 or 5.1.2 home theater systems and stereo systems, fail to achieve an excellent sound effect due to limitations in crosstalk cancellation and room impact.
Innovation Solution
A sound box position adjustment method that involves rotating sound boxes to find an optimal position based on stable loudness of positioning audio, using electronic devices to determine target positions through loudness detection and adjustment, and applying filter coefficients for precise crosstalk cancellation and sound image enhancement.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If crosstalk cancellation is performed using head-related transfer function and room response to virtualize surround sound box, then sound image space can be simulated, but excellent sound effect cannot be achieved in indoor use scenario
Solution Approach 1:
The patent implements feedback by having the electronic device detect the positioning audio played by the sound box at different positions, determine the target position based on the detected audio characteristics, and send indication information to adjust the sound box position. This closed-loop feedback mechanism enables precise positioning and crosstalk cancellation that adapts to the specific indoor environment, resolving the contradiction between simulated sound image space and actual sound effect quality.
Solution Approach 2:
The patent replaces traditional mechanical acoustic methods (fixed speaker arrays and passive room acoustics) with an electronic control system that uses digital signal processing, audio detection, and automated position adjustment. The electronic device calculates filter coefficients and controls the sound box positioning electronically, substituting mechanical acoustic design with programmable electronic systems to achieve superior sound effect in indoor environments.
2Ease of operation
If beamforming is used to control speaker array to constitute directional sound wave and transmit from fixed angle, then surrounding sense can be achieved, but excellent sound effect cannot be achieved in indoor use scenario
Solution Approach 1:
The patent implements dynamics by enabling the sound box to rotate and adjust its position dynamically based on detected audio characteristics. Instead of using a fixed-angle beamforming approach, the system continuously adapts the sound box orientation and position to optimize sound delivery to the user's location, transforming a static acoustic system into a dynamic, adaptive one that achieves superior sound effect in indoor scenarios.
Solution Approach 2:
The patent replaces the fixed mechanical beamforming approach with an electronic control system that uses audio detection, position calculation, and automated rotation control. The electronic device processes audio signals, determines optimal positioning, and controls the sound box movement electronically, substituting rigid mechanical acoustic design with flexible electronic systems that adapt to indoor environments.
3Reliability
If sound box position is adjusted based on loudness detection of positioning audio, then more accurate crosstalk cancellation can be implemented and room impact eliminated, but additional positioning process is required
Solution Approach 1:
The patent applies preliminary action by having the sound box play positioning audio at different positions before the actual audio playback. The electronic device detects this positioning audio in advance to determine the target position and calculate filter coefficients beforehand. This preliminary positioning process enables accurate crosstalk cancellation during actual use without adding significant time loss, as the positioning is performed once before the main audio content.
Solution Approach 2:
The system implements self-service by having the sound box automatically rotate through different positions and play positioning audio without manual intervention. The electronic device autonomously detects the positioning audio, determines the optimal position, and controls the sound box adjustment. This automated self-positioning process minimizes user involvement and time loss while achieving accurate crosstalk cancellation.
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
Enhances sound image effect and accurately restores the original sound by implementing more precise crosstalk cancellation and eliminating room impact, providing an immersive audio experience.
Implementation Method 1
the sound box to rotate from a first position to a second position in a preset direction and play positioning audio in a process of rotation
Implementation Method 2
the electronic device receives the positioning audio; the electronic device determines indication information based on the positioning audio, where the indication information is used to determine a target position of the sound box, the target position is a position of the sound box corresponding to a case in which a loudness of the received audio is largest
Implementation Method 3
implement more accurate crosstalk cancellation, eliminate impact of different rooms, enhance sound image effect
Data Source
AI summary
A method of sound box position adjustment is provided, including: An electronic device sends a first playing instruction to a sound box, where the first playing instruction is used to instruct the sound box to rotate from a first position to a second position in a preset direction and play positioning audio in a process of rotation, and a loudness of the positioning audio is unchanged when the positioning audio is being played; the electronic device receives the positioning audio; the electronic device determines indication information based on the positioning audio, where the indication information is used to determine a target position of the sound box, the target position is a position of the sound box when a loudness of the received audio is largest in a process of receiving the positioning audio; and the electronic device sends the indication information to the sound box.