Linear Prediction Coding
Wai C. Chu · 2003
Based on a highly simplified model for speech production, the linear prediction coding (LPC) algorithm is one of the earliest standardized coders that works at low bit-rate. In this chapter, the speech production model that the LPC coder relies on is described. Detail structures of the algorithm are given, which essentially incorporates the speech production model at its core. One important component of the LPC code is the voicing detector; its design is thoroughly explained. The main features of the FS1015 coder are highlighted for reference purposes. At the end of the chapter, the shortcomings of the LPC coder are depicted; these flaws are targets for correction by the next generation of speech coders.