Matches 201 - 208 out of 208 < 1 2 3 4 5
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4335379 Method and system for providing an audible alarm responsive to sensed conditions  
An alarm system responsive to a predetermined concentration of gaseous hydrocarbon in an area. A gaseous hydrocarbon responsive variable resistance element having a heater has resistance...
3855417 METHOD AND APPARATUS FOR PHONATION ANALYSIS LENDING TO VALID TRUTH/LIE DECISIONS BY SPECTRAL ENERGY REGION COMPARISON  
A method and apparatus for indicating emotional stress in speech by normalizing the ratio of peak amplitude signals in two or more frequency regions of a single response. Normalization is achieved...
3855418 METHOD AND APPARATUS FOR PHONATION ANALYSIS LEADING TO VALID TRUTH/LIE DECISIONS BY VIBRATTO COMPONENT ASSESSMENT  
A method and apparatus for indicating emotional stress in speech by detecting the presence of vibratto or rapid modulation of the phonation constituent within the speech signal envelope. The...
3742451 CREDIT SALES SYSTEM  
A credit method and system including a plurality of individual, separated credit stations each provided with a magnetic tape having credit information, such as the numbers of invalid cards. A...
3737580 SPEAKER AUTHENTICATION UTILIZING A PLURALITY OF WORDS AS A SPEECH SAMPLE INPUT  
A method and system for talker authentication in which a trial speech sample from a person who may be legitimate or who may be an imposter is compared to a standard speech sample of the legitimate...
3673331 IDENTITY VERIFICATION BY VOICE SIGNALS IN THE FREQUENCY DOMAIN  
Voice verification is accomplished at a plurality of spaced apart facilities each having a plurality of terminals. Multiplexing structure interconnects the terminals through a communications link...
3525811 REMOTE CONTROL VOTING SYSTEM  
3466394 VOICE VERIFICATION SYSTEM  
Matches 201 - 208 out of 208 < 1 2 3 4 5