I returned the words keep your voice down to the security guard when he talked with a lady loudly in one minute of his accusing ;

保安让我“ 小声点”还不到一分钟，他就去跟一位女士大声地说话了，我把他所有的原话还给了他。

Voice pattern recognition has broad prospects of application in unmanned guard defect detecting disaster-preventing and so on .

声音模式识别在无人 职守、故障检测、灾害预防等方面具有很广阔的应用前景。