首页>
外国专利>
Method for determining alcohol use by comparison of high-frequency signals in difference signal, and recording medium and device for implementing same
Method for determining alcohol use by comparison of high-frequency signals in difference signal, and recording medium and device for implementing same
展开▼
机译:通过比较差信号中的高频信号来确定酒精使用的方法,记录介质和实现该方法的装置
展开▼
页面导航
摘要
著录项
相似文献
摘要
This method for determining alcohol use comprises the steps of: detecting an effective frame in an input audio signal; detecting a difference in signal within the original signal of the effective frame; performing a fast Fourier conversion on the difference signal to be transformed into a frequency domain; detecting high-frequency components within the difference signal subjected to the fast Fourier transform; and determining the state of alcohol use on the basis of a gradient difference between the high-frequency components. Accordingly, the present invention can identify the state and extent of alcohol use by a driver or an operator from a long distance and thus can prevent accidents caused by driving or operating vehicles and machines under the influence of alcohol.
展开▼