Programmable communications terminal optimization using systematic digital signal compression procedures. - Charlton M. Walter (ICASSP, 1976)

Application of canonical coordinate methods to the characterization of a family of error minimizing signal compression techniques. - Charlton M. Walter (ICASSP, 1978)

Geometrical characterization of the canonical coordinate basis underlying a family of error minimizing signal compression techniques. - Charlton M. Walter (ICASSP, 1979)

Signal compression model interrelationships in the time, frequency, principal component and canonical coordinate domains. - Charlton M. Walter; John D. Tardelli (ICASSP, 1982)

A speech waveform analysis and reconstruction process based on non-euclidean error minimization and matrix array processing techniques. - John D. Tardelli; Charlton M. Walter (ICASSP, 1986)