Subjective performance evaluation of the RPE-LTP codec for the pan-European cellular digital mobile radio system

The planned pan-European cellular digital mobile radio (DMR) system will use a regular pulse excitation with long-term predictor (RPE-LTP), 13 kb/s codec. Four phases of experimentation were planned: (1) national preselection tests; (2) European selection tests; (3) optimization tests; and (4) verification and characterization tests with simulated burst-error patterns. The subjective listening tests adopted are described, and an outline of the performance of the RPE-LTP codec with other parts of the digital network is given. Some general guidance is also given on its performance with nonvoice services which include information and DTMF tones.<<ETX>>

[1]  J.E. Natvig,et al.  Speech processing in the pan-European digital mobile radio system (GSM)-system overview , 1989, IEEE Global Telecommunications Conference, 1989, and Exhibition. 'Communications Technology for the 1990s and Beyond.

[2]  Karl Hellwig,et al.  Speech codec for the European mobile radio system , 1988, ICASSP-88., International Conference on Acoustics, Speech, and Signal Processing.

[3]  Karl Hellwig,et al.  Speech codec for the European mobile radio system , 1989, IEEE Global Telecommunications Conference, 1989, and Exhibition. 'Communications Technology for the 1990s and Beyond.

[4]  Jon Emil Natvig.  Evaluation of six medium bit-rate coders for the Pan-European digital mobile radio system , 1988, IEEE J. Sel. Areas Commun..

[5]  G. Cosier,et al.  Voice control of the pan-European digital mobile radio system , 1989, IEEE Global Telecommunications Conference, 1989, and Exhibition. 'Communications Technology for the 1990s and Beyond.

[6]  Paolino Usai,et al.  A subjective testing methodology for evaluating medium rate codecs for digital mobile radio applications , 1988, Speech Commun..