Chances are that if you're calling 9-1-1 (or 9-9-9, or whatever it is where you are), you're not likely to tell the operator that your case isn't all that urgent, and that it can wait. The problem is, sometimes emergency dispatch centers are so overloaded with callers – all of them stating that they need assistance right now – that some sort of system is required in order to determine who should get help first. Dutch researchers claim to have developed just such a system, which analyzes callers' voices to determine how stressed-out they are.
The team, from Delft University of Technology, the Netherlands Defence Academy and TNO Defence, Security and Safety, developed a computer algorithm to prioritize the calls. They "trained" it using four different techniques, incorporating recordings of actual calls in which the final outcome was known. The algorithm measures parameters such as the speed at which the caller is speaking, rises and falls in the pitch and tone of their voice, and their rate of breathing.
In tests utilizing a database of calls, the algorithmic system reportedly had error rates as low as 4.2 percent. The researchers believe that by refining the algorithm and using a larger training set, that number could be improved upon.
The system is expected to initially be used for military applications, but could eventually see civilian use.
The research was published in the current issue of International Journal of Intelligent Defence Support Systems.
I doubt this technology will work in the context of 9-1-1 - the stress a person is feeling in their given situation doesn\'t always equate to the proper response from emergency services. A couple of examples: A person recieving threatning phone calls may be under severe stress from it, but a response from emergency services wouldn\'t be high priority. A person with neighbors outside physically fighting may not have any stress at all in their voice because they\'re used to these neighbors fighting, but a fight will receive a high priority response from emergency services.
As low as, and how about how inaccurate it could be - 98.2%. Who knows because the basic question is not asked or is asked not provided.
Are they trying to reward people who panic over people who remain calm?
Sounds like someone was trying to get some government grant money.
They mentioned in the article that everyone calling views their situation as very important, lets face it, they wouldn\'t have called 9-1-1 if they didn\'t. Now we all know that the most important situation is always the one that affects the person \"calling\" in this case. In this case we can see that another problem with this is the fact that they told people about it. If you were at the DMV (Dept of Motor Vehicles), and everyone knew that yelling about it would get you moved to the front of that 3 hour line then everyone in the place would be screaming. Likewise, if poeple callin 9-1-1 for their \"extremely urgent\" situation, every person would barely be able to speak they\'de be so stressed.