Spatial Audio System for Group Communication
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Solution Overview
Problem
Existing intercommunication systems for groups, such as motorcycle riders, lack spatial information about the relative position of users, causing all voices to seem to come from a single point in space, which can lead to navigation errors and potential collisions.
Innovation Solution
A system that includes a detection unit to determine the three-dimensional head position of users, a communication unit to transmit and receive user positions and identifiers, and a processing unit to synthesize spatially resolved audio signals, allowing users to perceive audio information based on the relative position of other users, using radar-communication techniques and sensors like radar and LIDAR for accurate localization.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Device complexity
If simple acoustic transmission is used for intercommunication, then the system is simple and easy to implement, but spatial information about user positions is lost and all users sound as if they occupy the same point in space
Solution Approach 1:
The patent introduces an intermediary system consisting of microphones, processors, and speakers that mediate between users' voices and the audio output. This intermediary system captures spatial information through multiple microphones positioned at different locations, processes this information to determine user positions, and reproduces audio with correct spatial positioning through strategically placed speakers, thereby resolving the contradiction between system simplicity and spatial information preservation
Solution Approach 2:
The patent transitions from one-dimensional acoustic transmission to three-dimensional spatial audio reproduction. By using multiple microphones and speakers arranged in specific geometric patterns, the system creates a three-dimensional audio field that preserves spatial information about user positions, allowing listeners to perceive the directional location of each speaker's voice in the physical space
2Loss of information
If multiple microphones and speakers are used to capture and reproduce spatial audio, then spatial information is preserved, but the device complexity and number of components increase
Solution Approach 1:
The patent merges the functions of multiple microphones and speakers into an integrated audio system. The microphones are positioned at specific locations to capture spatial information, and the speakers are strategically placed to reproduce this information with correct spatial positioning. This merging approach reduces the effective complexity by creating a unified system that achieves spatial audio reproduction through coordinated component placement rather than independent complex subsystems
Solution Approach 2:
The patent applies local quality by positioning microphones and speakers at specific locations within the communication system. Each microphone is placed at a determined position to capture audio from particular directions, and each speaker is positioned to reproduce audio to specific target locations. This localized positioning strategy enables spatial information preservation while keeping the overall system design relatively simple and modular
Data Source
AI summary
A system for providing spatially projected audio communication between members of a group, the system mounted onto a respective user of the group, the system comprising: a detection unit; a communication unit; a processing unit; and an audio interface unit, configured to audibly present the synthesized spatially resolved audio signal to the user.