Mobile Directional Audio Positioning for Multiple Targets
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Solution Overview
Problem
Existing technologies face challenges in performing sound emission or sound collection for multiple targets in an integrated manner, primarily due to difficulties in controlling sound direction effectively.
Innovation Solution
An unmanned moving body equipped with a directional speaker or microphone and a processor that uses sensing data to determine the presence of additional targets, calculate their positional relationship, and adjust its position to ensure sound emission or collection occurs within a predetermined quality range for all targets.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If sound direction is controlled for a single target, then sound emission quality for that target is improved, but the ability to serve multiple targets simultaneously deteriorates
Solution Approach 1:
The patent applies dynamics by making the unmanned moving body mobile rather than fixed, allowing it to change its position dynamically to serve multiple targets. The body moves to positions where it can effectively emit sound to multiple targets within its sound reach range, transforming a static single-target system into a dynamic multi-target system.
Solution Approach 2:
The patent transitions from controlling only the directional angle (2D rotation) to incorporating spatial position (3D movement). By adding the dimension of physical movement, the system can serve multiple targets that are spatially distributed, not just targets within a fixed rotational range.
2Adaptability or versatility
If the unmanned moving body moves to serve multiple targets, then adaptability improves, but positioning precision deteriorates
Solution Approach 1:
The patent employs feedback mechanisms where the processor continuously monitors sensing data about target positions and the body's current position. Based on this feedback, the processor calculates the optimal position that allows sound to reach multiple targets within the predetermined quality range, and controls the body to move to that calculated position, thereby maintaining positioning precision while serving multiple targets.
Solution Approach 2:
The patent replaces simple mechanical positioning with an intelligent control system that uses sensing data processing and positional relationship calculation. Instead of relying on fixed mechanical mounting, the system uses software-based position calculation and control to achieve precise multi-target positioning.
Data Source
AI summary
An unmanned moving body includes a directional speaker that outputs sound in an orientation direction and a processor that obtains one or more instances of sensing data. The processor: determines whether or not a second target is present in a vicinity of a first target in accordance with at least one of the one or more instances of sensing data; calculates a positional relationship between the first target and the second target when it is determined that the second target is present; and determines a first position of the unmanned moving body in accordance with the positional relationship and causes the unmanned moving body to move to the first position, the first position being a position that places the first target and the second target within a range over which the sound from the directional speaker reaches at at least a predetermined quality.