Patent Document ID: 20090265170
Application ID: 12439051
Patent Status: 0

Claim One:
1 : An emotion detecting method that performs an emotion detecting processing based on an audio feature of input audio signal data, comprising: an audio feature extracting step of extracting one or more of a fundamental frequency, a sequence of a temporal variation characteristic of the fundamental frequency, a power, a sequence of a temporal variation characteristic of the power and a temporal variation characteristic of a speech rate from the audio signal data for each analysis frame as an audio feature vector and storing the audio feature vector in a storage part; an audio feature appearance probability calculating step of reading the audio feature vector for each analysis frame and calculating the audio feature appearance probability that the audio feature vector appears on condition of sequences of one or more emotional states using a first statistical model constructed based on previously input learning audio signal data; an emotional state transition probability calculating step of calculating the probability of temporal transition of sequences of one or more emotional states as the emotional state transition probability using a second statistical model; an emotional state probability calculating step of calculating the emotional state probability based on the audio feature appearance probability and the emotional state transition probability; and an information outputting step of outputting information about the emotional state for each section including one or more analysis frames based on the calculated emotional state probability.