Directional Speaker Positioning for Multi-Target Drone Audio
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Solution Overview
Problem
Existing unmanned moving bodies face difficulties in performing sound emission or sound collection for multiple targets in an integrated manner, as they typically only control sound direction, making it challenging to effectively reach or collect sound from multiple individuals simultaneously.
Innovation Solution
An unmanned moving body equipped with a directional speaker or microphone and a processor that determines the positional relationship between targets using sensing data, allowing it to move to a position where both the speaker's sound or the microphone's sound can reach or collect sound from multiple targets at a predetermined quality, ensuring integrated sound emission or collection.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If sound direction is controlled only, then sound emission or collection for a single target is achieved, but sound emission or collection for multiple targets cannot be performed in an integrated manner
Solution Approach 1:
The patent transitions from controlling only the directional angle (1D rotation) to controlling both directional angle and distance (2D positioning). By adding the distance dimension to the traditional directional control, the system can simultaneously serve multiple targets at different positions by moving to optimal distances while maintaining appropriate sound direction, thereby achieving integrated sound emission/collection for multiple targets without complicating the control system architecture
2Reliability
If the unmanned moving body moves to reach multiple targets, then sound quality for multiple targets is improved, but time and position calculation complexity increase
Solution Approach 1:
The system performs preliminary detection of multiple targets and pre-calculates optimal positions before executing sound emission. By detecting targets and determining their positions in advance, the system prepares the movement plan beforehand, allowing the unmanned moving body to move directly to pre-calculated optimal positions without real-time calculation delays during sound emission, thus ensuring sound quality while minimizing time loss
Data Source
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AI summary
An unmanned moving body (100) includes a directional speaker (107) that outputs sound in an orientation direction and a processor (150) that obtains one or more instances of sensing data. The processor (150): 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 from at least one of the one or more instances of sensing data when it is determined that the second target is present; and determines a first position of the unmanned moving body (100) in accordance with the positional relationship and causes the unmanned moving body (100) 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 (107) reaches at at least a predetermined quality.