| 摘要 |
A voice control system receives a voice command from a user via a microphone. A command executability determination circuit determined whether the voice command is executable in the current function setting of a target device controlled by the voice control system. If the command is executable, the command is executed. If the command is inexecutable, a proper usage of the voice command and executable commands related to the voice command are provided to the user. Then, the user is prompted to use one of the executable commands. In other words, the user is notified of the reason why the voice command is not executed and a proper usage of the voice command.
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