Method for determining alcohol consumption, and recording medium and terminal for carrying out same
First Claim
1. A method for determining whether alcohol is consumed by a person in a vehicle, the method comprising:
- receiving a voice signal from the said person in the vehicle and converting the received voice signal into a plurality of voice frames;
extracting a voice frame corresponding to a voiced sound from among the plurality of voice frames;
calculating a plurality of formant energies by applying linear predictive coding according to a plurality of linear prediction orders to the extracted voice frame;
computing differences among the plurality of formant energies;
determining whether alcohol is consumed by said person in the vehicle according to the computed differences; and
enabling or disabling the vehicle based on the determination.
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Accused Products
Abstract
Disclosed are a method for determining whether a person is drunk after consuming alcohol on the basis of a difference among a plurality of formant energy energies, which are generated by applying linear predictive coding according to a plurality of linear prediction orders, and a recording medium and a terminal for carrying out the method. The alcohol consumption determining terminal comprises: a voice input unit for receiving voice signals and converting same into voice frames and outputting the voice frames; a voiced/unvoiced sound analysis unit for extracting voice frames corresponding to a voiced sound from among the voice frames; an LPC processing unit for calculating a plurality of formant energy energies by applying linear predictive cording according to the plurality of linear prediction orders to the voice frames corresponding to the voiced sound; and an alcohol consumption determining unit for determining whether a person is drunk after consuming alcohol on the basis of a difference among the plurality of formant energy energies which have been calculated by the LPC processing unit, thereby determining whether a person is drunk after consuming alcohol depending on a change in the formant energy energies generated by applying linear predictive coding according to the plurality of linear prediction orders to voice signals.
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Citations
18 Claims
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1. A method for determining whether alcohol is consumed by a person in a vehicle, the method comprising:
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receiving a voice signal from the said person in the vehicle and converting the received voice signal into a plurality of voice frames; extracting a voice frame corresponding to a voiced sound from among the plurality of voice frames; calculating a plurality of formant energies by applying linear predictive coding according to a plurality of linear prediction orders to the extracted voice frame; computing differences among the plurality of formant energies; determining whether alcohol is consumed by said person in the vehicle according to the computed differences; and enabling or disabling the vehicle based on the determination. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9)
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10. A non-transitory computer-readable recording medium having a program recorded thereon for performing a method for determining whether alcohol is consumed by a person in a vehicle, the method comprising:
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receiving a voice signal from the said person in the vehicle and converting the received voice signal into a plurality of voice frames; extracting a voice frame corresponding to a voiced sound from among the plurality of voice frames; calculating a plurality of formant energies by applying linear predictive coding according to a plurality of linear prediction orders to the extracted voice frame; computing differences among the plurality of formant energies; determining whether alcohol is consumed by said person in the vehicle according to the computed differences; and enabling or disabling the vehicle based on the determination. - View Dependent Claims (11, 12, 13, 14, 15, 16, 17, 18)
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Specification