Linear predictive coding systems

This paper describes the real time implementation of a Linear Predictive Coding algorithm that has been developed over the past five years. The algorithm chosen for the analyzer is a modification of the Covariance Method introduced by B. S. Atal [1],[2] of Bell Labs. The system for pitch extraction uses a minimum distance function correlation technique. A dynamic programming algorithm [3] is used for pitch smoothing and correction of isolated pitch errors. The synthesizer uses a transversal filter. Considerable time has been devoted to optimizing the running time and integer scaling of the different algorithms for real time implementation on a 16 bit mini-computer.