A bi-level coding technique for compressing broadband residue sequences

Many coding techniques result in residue sequences with Gaussian, Laplacian, and Gamma amplitude distributions. Such coding techniques occur in LPC (Linear Predictive Coding) of speech, image, and seismic waveforms [ l-4,6]. We assume that the residue sequence is a white (memoryless) signed integer sequence. For example, the residue sequence from a least-squares linear predictor for seismic waveform data [ 4,6] is shown to be white Gaussian. A technique called bi-level sequence coding is developed in this paper for such applications.