Alarm method and system based on voice events, and building method on behavior trajectory thereof
First Claim
1. An alarm method based on voice events, said method comprising:
- capturing a plurality of voice signals and sensing other sensed signals of an environment where a remote unit is located;
integrating the captured voice signals and the other sensed signals into at least a voice event by using a voice event detection method;
continuously detecting voice events through said voice event detection method and continuously recording the detected voice events;
generating a behavior trajectory through a behavior trajectory building method after accumulating a sufficient number of the detected voice events;
detecting a latest behavior through latest continuous voice events and comparing said latest behavior with a history of said behavior trajectory; and
issuing a notification alarm message when an abnormal behavior is detected;
wherein said behavior trajectory is generated by said behavior trajectory building method based on classifying qualified pre-selected strings of letters into a plurality of behavior types for building said behavior trajectory, said qualified pre-selected strings of letters being determined by naming each of the voice events with a letter to form letter sequences for the continuously detected voice events, finding identical strings in the letter sequences by comparing the letter sequences in a pair-wise manner, and qualifying each identical string of each type according to presence probability and length of the identical string.
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Abstract
Disclosed are an alarm method and system based on voice events, and a building method on behavior trajectory thereof. The system comprises a signal sensor, a voice-event detector and notice and alarm element. In the method, voice signals are captured from a remote unit in an environment. The captured voice signals are classified into at least a voice event. As such, an emergent-event notice is automatically transmitted out if one of predefined emergent events is detected. In the building method on behavior trajectory, messages on voice events are continuously recorded. When the number of the recorded voice events reaches a threshold, a behavior trajectory is constructed, in which a behavior consists of two or more voice events or a single voice event.
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Citations
23 Claims
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1. An alarm method based on voice events, said method comprising:
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capturing a plurality of voice signals and sensing other sensed signals of an environment where a remote unit is located; integrating the captured voice signals and the other sensed signals into at least a voice event by using a voice event detection method; continuously detecting voice events through said voice event detection method and continuously recording the detected voice events; generating a behavior trajectory through a behavior trajectory building method after accumulating a sufficient number of the detected voice events; detecting a latest behavior through latest continuous voice events and comparing said latest behavior with a history of said behavior trajectory; and issuing a notification alarm message when an abnormal behavior is detected; wherein said behavior trajectory is generated by said behavior trajectory building method based on classifying qualified pre-selected strings of letters into a plurality of behavior types for building said behavior trajectory, said qualified pre-selected strings of letters being determined by naming each of the voice events with a letter to form letter sequences for the continuously detected voice events, finding identical strings in the letter sequences by comparing the letter sequences in a pair-wise manner, and qualifying each identical string of each type according to presence probability and length of the identical string. - View Dependent Claims (2, 3, 4, 5, 6, 7)
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8. A method for building a behavior trajectory, comprising:
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continuously detecting voice events by integrating captured voice signals and other sensed signals using a voice event detection method and continuously recording the detected voice events; naming the detected voice events with letters to obtain a plurality of letter sequences representing the detected voice events; comparing pair-wise said plurality of letter sequences to find at least one identical string; computing presence probability and length of said at last one identical string and setting thresholds for the probability and length to obtain at least a qualified pre-selected string; classifying said at least a pre-selected string into a plurality of types, with each type representing a behavior type, by using a classification algorithm; and inducing said at least a qualified pre-selected string of each type to build a behavior trajectory; wherein detecting a latest behavior through latest continuous voice events and comparing said latest behavior with a history of said behavior trajectory; and issuing a notification alarm message when an abnormal behavior is detected. - View Dependent Claims (9)
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10. An alarm system based on voice events, said system comprising:
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a signal sensor for capturing one or more voice signals and sensing other sensed signals externally inputted, outputting the captured voice signals and the other sensed signals and recording locations of the captured voice signals and the other sensed signals; a voice event detector connected to said signal sensor, for determining a plurality of corresponding voice events based on said locations and at least a characteristic parameter of the captured voice signals and the other sensed signals; and a notice and alarm element connected to said voice event detector, for executing notification and alarming functions based on a behavior trajectory of said plurality of corresponding voice events; wherein said system includes a behavior trajectory building module for generating said behavior trajectory through a behavior trajectory building method after accumulating a sufficient number of the voice events based on classifying qualified pre-selected strings of letters into a plurality of behavior types for building said behavior trajectory, said qualified pre-selected strings of letters being determined by naming each of the voice events with a letter to form letter sequences for continuously detected voice events, finding identical strings in the letter sequences by comparing the letter sequences in a pair-wise manner, and qualifying each identical string of each type according to presence probability and length of the identical string. - View Dependent Claims (11, 12, 13, 14, 15, 16, 17, 18, 19, 20, 21, 22, 23)
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Specification