Introduction - If you have any usage issues, please Google them yourself
		 
This paper presents methods for speech spectrum prediction based 
on Gaussian mixture models. Spectrum prediction may be useful in a packet transmission system where the sensitivity to packet losses is a major problem. 
Models of  speech are trained by the Expectation Maximization algorithm using pairs, triples etc.  of  consecutive cepstral vectors. 
The models are used to design first,  second etc. order predictors. 
The prediction schemes are evaluated using  the spectral distortion criterion and compared to a simple reference method. The 
best prediction scheme obtains an average spectral distortion that 
is 0.46 dB less than for the reference method.