Siren Controller Voice Authentication via Audio ID Sequence
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Current siren alerting systems face challenges in ensuring continuous availability and security, particularly in maintaining the integrity of voice messages across redundant communication paths, which can lead to unauthorized activations and delayed or incorrect audio messages during emergencies.
Innovation Solution
Incorporating an audio identification sequence within the siren activation sequence, sent over both data and voice channels, allows the siren alerting site to authenticate the source of voice messages and prevent duplicates, ensuring only authorized messages are played, even in the presence of communication path failures.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If voice messages are transmitted over redundant communication paths, then system reliability is improved, but message authentication and duplicate prevention become more difficult
Solution Approach 1:
An audio identification sequence is generated and embedded within the voice message before transmission. This preliminary action enables the receiving system to authenticate messages and detect duplicates by comparing the embedded identification sequences, thus maintaining message integrity while using redundant communication paths.
Solution Approach 2:
The audio identification sequence acts as an intermediary element that facilitates message authentication. It is embedded in the voice message and used by the receiving system to verify authenticity and detect duplicates, enabling reliable operation over redundant communication paths without compromising message integrity.
2Adaptability or versatility
If audio messages are sent over separate voice channels, then communication flexibility is improved, but authentication of the source becomes more difficult
Solution Approach 1:
The audio identification sequence is merged with the voice message by embedding it within the audio signal. This combining allows the message to be transmitted over voice channels while maintaining authentication capability, as the identification sequence travels with the message through the same channel.
Solution Approach 2:
The audio identification sequence serves multiple functions: it enables source authentication, detects duplicate messages, and works across different communication channels. This multi-functionality allows the system to maintain reliability while using flexible voice channels for transmission.
3Device complexity
If pre-recorded voice messages are used, then system complexity is reduced, but responsiveness to current emergencies is worsened
Solution Approach 1:
The audio identification sequence is generated in advance and embedded in pre-recorded messages during the recording process. This preliminary preparation allows the system to maintain low complexity while enabling rapid deployment of appropriate messages during emergencies, as authenticated messages can be immediately played back without complex real-time processing.
Data Source
AI summary
Techniques for voice announcements over communications paths in siren systems are provided. In one aspect, a siren activation sequence including an audio identification sequence may be received at a siren alert site controller over a data communications channel of a first communications path. The audio identification sequence may be extracted from the siren activation sequence. A first combined audio signal may be received at the siren alert site controller over a voice communications channel of the first communication path. It may be determined that the first combined audio signal includes the audio identification sequence. The audio identification sequence may be extracted from the first combined audio signal to create a first audio signal. The first audio signal may be played over a siren controlled by the siren alert site controller.