IARU Region 1 Technical Recommendation D.2

CEFALU 1984

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PROVISIONAL STANDARD FOR DELTA-MODULATION

For experiments with digital speech transmission CSVD (Continuously Variable Slope Delta) modulation based on the IC's commercially available for this purpose should be used with the following parameters :

- 3 bit adaptive algorithm as used in the IC's FX309, HC55516, MC3417

- bit rate : 16 kbit/second 50 ppm

- primary integrator time constant : 1 millisecond

- syllabic integrator time constant : 4 milliseconds

- modulation : F1E with Df = 10 kHz