4. What isWhat is Delta Modulation?Delta Modulation?
• A delta modulation is an analog-to-digital
and digital-to-analog signal conversion
technique used Transfer Data.
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5. Why Delta Modulation?Why Delta Modulation?
• (DM or Δ-modulation) is an analog-to-digital
conversion.
• DM is the simplest form of differential pulse-code
modulation.(PCM)
• Delta Modulation used by Satellite Business
Systems or SBS.
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6. Why Delta Modulation?Why Delta Modulation?
• To achieve high signal-to-noise ratio, delta
modulation.
• DM can change instantly but
voice signals can’t not change instantly.
• DM signal is smaller than the PCM system.
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11. DemodulationDemodulation
• Demodulation is digital-to-analog signal conversion.
• It’s the reverse System of modulation.
• Demodulation was first used in radio receivers.
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12. De M Block DiagramDe M Block Diagram
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19. Limitations of the systemLimitations of the system
• Slope overload
• When the analog signal has a high rate of change,
the DM can “fall behind” and a distorted output
occurs
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