Foundation of Soongsil University-Industry Cooperation
发明人:
Myung Jin Bae,Sang Gil Lee,Seong Geon Bae
申请号：
US15300168
公开号：
US09916845B2
申请日:
2014.04.02
申请国别(地区):
US
年份:
2018
代理人:
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.
