Patent ID: 8781821

Claim:
A method for interpreting a spoken command by detecting voiced intervals and non-voiced intervals in the spoken command, and for performing a type-1 responsive action if the command has exactly one voiced interval, and for performing a type-2 responsive action if the command has two voiced intervals separated by a non-voiced interval, a voiced interval being a time interval containing voiced sound, and a non-voiced interval being a time interval that has no voiced sound therein, said method comprising the steps: (3a) converting sound waves into an electrical sound signal, and comparing the sound signal to a threshold voltage, a sound being detected when the sound signal exceeds the threshold voltage, and no sound being detected while the sound signal remains below the threshold voltage; (3b) detecting a first voiced interval when the sound signal exceeds a threshold voltage V1+; (3c) then, determining when the first voiced interval has ended by waiting until the sound signal remains below a threshold voltage Va+ throughout a time period Ta; (3d) then, detecting a second voiced interval if the sound signal exceeds a threshold voltage V2+ during a time period Tg; (3e) then, performing the type-1 responsive action if the sound signal remains below V2+ throughout Tg, and performing the type-2 responsive action if the sound signal exceeds V2+ during Tg.