Emotion recognizing system and method, and smart robot using the same

An emotion recognizing method, to recognize an emotional state according to a voice signal, adapted to an emotion recognizing system, wherein the emotion recognizing system includes an audio receiver, a memory and a processor, the audio receiver receives the voice signal, the memory stores a recognition program, a built-in emotion database, a plurality of personal emotion databases and a preset voiceprint database, different personal emotion databases correspond to different individuals, the preset voiceprint database stores a plurality of sample voiceprint and relationship between the sample voiceprint and identifications of different individuals, and the processor is connected to the audio receiver and the memory and executes the recognition program, comprising:

• processing the voice signal to obtain a voiceprint file, and recognizing the identification of an individual that transmits the voice signal according to the voiceprint file;
• determining whether a completion percentage of the personal emotion database corresponding to the identification of the individual is larger than or equal to a predetermined percentage, wherein the voiceprint file is recognized according to the personal emotion database if the completion percentage of the personal emotion database corresponding to the identification of the individual is larger than or equal to the predetermined percentage, and the voiceprint file is recognized according to the built-in emotion database if the completion percentage of the personal emotion database corresponding to the identification of the individual is smaller than or equal to the predetermined percentage;
• comparing the voiceprint file with a preset voiceprint to capture a plurality of characteristic values;
• comparing the characteristic values with sets of sample characteristic values in the personal emotion database or in the built-in emotion database and determining the emotional state, wherein different sets of the sample characteristic values correspond to different emotional states;
• and
• storing a relationship between the characteristic values and the emotional state in the personal emotion database and the built-in emotion database.