ABSTRACT
Linear Prediction (LP) is a widely used and successful method that represents the frequency shaping attributes of the vocal tract in the source-filter model of Section 2.3. For speech coding, the LP analysis characterizes the shape of the spectrum of a short segment of speech with a small number of parameters for efficient coding. Linear prediction, also frequently referred to as Linear Predictive Coding (LPC), predicts a time-domain speech sample based on a linearly weighted combination of previous samples. LP analysis can be viewed simply as a method to remove the redundancy in the short-term correlation of adjacent samples. However, additional insight can be gained by presenting the LP formulation in the context of lossless tube modeling of the vocal tract.
