Audio-Parameter Synchronization Using Audible Event Markers
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Solution Overview
Problem
Emergency service providers face challenges in aligning audio recordings with corresponding physiological data from multiple responders and devices, making it difficult to identify which recordings correspond to which emergency events, especially in noisy environments.
Innovation Solution
A system that includes a medical device generating audible markers, a separate recorder detecting these markers and other sounds, and a synchronizer aligning the audio recordings with parameter data using time-stamping and speech-to-text techniques to generate aligned data and reports.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Quantity of substance
If multiple independent audio recorders are used by multiple responders, then comprehensive event documentation is improved, but the ability to identify and associate specific recordings with specific events deteriorates
Solution Approach 1:
The patent introduces an intermediary synchronization signal that acts as a mediator between multiple independent recording systems. This signal contains unique event identifiers that bridge the gap between separate recordings and their corresponding events, allowing responders to accurately associate recordings with specific incidents even when using multiple devices simultaneously
Solution Approach 2:
The system implements feedback by having the synchronization signal broadcast information about ongoing events that recording devices can detect and use to tag their recordings. This creates a closed-loop system where recording status information feeds back to all devices, enabling automatic association without manual intervention
2Ease of operation
If audio recordings are made without synchronization markers, then recording simplicity is improved, but the precision of time interval identification deteriorates
Solution Approach 1:
The synchronization signal is generated and broadcast in advance of actual recording by each device. This preliminary action establishes a common time reference and event identifier before the recording begins, eliminating the need for complex post-processing alignment while maintaining precise time interval identification capability
Solution Approach 2:
The synchronization signal serves as an intermediary that carries precise timing and event identification information without requiring complex interaction between recording devices. This mediator enables accurate time interval measurement while keeping the recording operation itself simple and automatic
Data Source
AI summary
Various techniques relate to aligning parameters and audio recordings obtained at a rescue scene. An example method includes receiving, from a first device, a first file including first measurements of a first parameter at first discrete times in a time interval. The first file further indicates a marker output by the first device during the time interval. The method also includes receiving, from a second device, a second file comprising second measurements of a second parameter at second discrete times in the time interval. The method includes detecting the marker output by the first device in the second measurements of the second parameter and based on detecting the signal output by the first device in the second measurements, generating aligned data by time-aligning the first measurements of the first parameter and the second measurements of the second parameter. The method further includes outputting the aligned data.