Automatic recognition of continuous digits sequences by means of segmentation and dynamic programming

This paper describes an experiment of recognition of sequences of digits pronounced continuously. This experiment takes place in the design of a practical system for postal codes recognition. The speech signal is analyzed by a 15-channel spectral analyzer. The digit sequence is then recognized using a semi-global procedure which consists of two successive steps: - segmentation of the sequence into the digits which comprise the string, - recognition of the individual digits by a dynamic programming technique which was previously designed in the laboratory. Typical Results of segmentation and recognition will be given and discussed.