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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
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机译:比较不同信号中的高频信号确定酒精使用量的方法,以及记录介质和实现该方法的装置
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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.
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