Up to 40 percent of road deaths around the world are thought to be caused by alcohol.But one day, cars could detect whether a driver’s voice sounds drunk,to stop them from driving and prevent accidents.
Researchers in Germany have created the first library of drunk speech patterns, which couldbe used to predict drunkenness by listening for vocal cues.Called the AlcoholLanguage Corpus, the data base was made between 2007 and 2009 by giving people too much alcohol to drink, before recording conversations conducted in a stopped car, where the drunk person was sitting in the passenger seat.There are currently conversations from 162 German men and women in the publicly-available audio data base.
《快公司》(Fast Company)杂志报道，这些数据由慕尼黑大学(LudwigMaximilian University)专家和慕尼黑市法医学研究协会(the Institute ofLegal Medicine)共同收集。基于这些数据，来自皇后学院(Queens College)和哥伦比亚大学(Columbia University)的计算机科学家们开发出一种测醉程序，这样通过测听模糊语音模式就能判断驾驶员是否醉酒。他们发现检测醉后语音模式的过程与识别口音类似。
Experts at Ludwig Maxi milian University of Munich and the Institute of Legal Medicinein the city collected the data, Fast Company reported.From this, an algorithm that is capable of detecting whether someone is drunk by listening in on slurring speech patterns, has been created by computer scientists at Queens College and Columbia University.They found that they could detect drunken speech patterns much like identifying an accent.
Drunken speech hall marks include stammering and stuttering. Voices also tend to risein pitch and words begin to slur, they said.
It is hoped that the software could be used along side devices such as locks and immobilizers to make it impossible for people to drive when drunk – perhaps by asking them a few questions while analyzing the drivers voice.
‘The cars themselves could listen to the driver, detect that the potential driver is intoxicated, and prevent the car from starting,’ the researchers explained.
However,the safety system may be a few years away, because the algorithm to detectdrunkenness is typically only right around three quarters of the time.
‘That means, you want to go and drive your car, one in three times we're going to say you're drunk. That's bad for a product,’ Professor Andrew Rosenberg, of Queens College New York (CUNY) said.
The next step is to add more languages to the library so that more experts can use the public library for their own research.