Application of Multimodal NLP Instruction Combined with Speech Recognition in Oral English Practice

Table 2

HMM identification process parameters.

Parameter	Explain
	Observation vector
	The number of Gaussian elements contained in each state
	The weight of the first mixed Gaussian in the state
	Represents the normal Gaussian probability density function
	The mean vector of the first mixed Gaussian element in the state
	The covariance matrix of the first mixed Gaussian element in the state