A DFT-based residual-excited linear predictive coder (RELP) for 4.8 and 9.6kb/s. - Harald Katterfeldt (ICASSP, 1981)

Implementation of a robust RELP speech coder. - Harald Katterfeldt; E. Behl (ICASSP, 1983)

Sprachgrenzenbestimmung mit Polynomklassifikatoren. - Harald Katterfeldt (DAGM-Symposium, 1985)

A speaker-independent isolated-word recognizer based on polynomial classifiers. - Harald Katterfeldt (ICASSP, 1988)

Zur Anwendung von Polynomklassifikatoren für die sprecherunabhängige Einzelworterkennung. - Harald Katterfeldt (1988)

Methoden und Algorithmen der Worterkennung / Methods and Algorithms for Word Recognition. - Fritz Class; Harald Katterfeldt; Peter Regel (it Inf. Technol., 1989)

On the performance of polynomial and HMM whole-word classifiers for digit recognition over telephone. - Harald Katterfeldt; Peter Regel-Brietzmann; B. Vater (ICASSP, 1992)