Podcast
Questions and Answers
What are the three characteristics of a carrier signal that can be modified in Digital Data / Analogue Signals Modulation?
What are the three characteristics of a carrier signal that can be modified in Digital Data / Analogue Signals Modulation?
- Amplitude, Frequency, Phase (correct)
- Resolution, Bit rate, Frequency
- Color, Intensity, Duration
- Wavelength, Volume, Speed
In the frequency domain, the modified carrier signal is centered around which frequency?
In the frequency domain, the modified carrier signal is centered around which frequency?
- A1
- 400-4000Hz
- fc (correct)
- f1
What is the main purpose of using a MODEM in digital data transmission?
What is the main purpose of using a MODEM in digital data transmission?
- Enhance color depth
- Increase data storage capacity
- Create analog voice signals
- Facilitate Full Duplex communications (correct)
Which modulation technique involves representing data using different amplitudes?
Which modulation technique involves representing data using different amplitudes?
What is the range of voice frequencies typically used in modulated analogue signals?
What is the range of voice frequencies typically used in modulated analogue signals?
What is the purpose of creating multiple channels with carrier signals at different frequencies?
What is the purpose of creating multiple channels with carrier signals at different frequencies?
In Amplitude Shift Keying (ASK), how is a binary zero (Space) encoded?
In Amplitude Shift Keying (ASK), how is a binary zero (Space) encoded?
What does Frequency Shift Keying (FSK) use to encode a binary one (Mark)?
What does Frequency Shift Keying (FSK) use to encode a binary one (Mark)?
Why does the carrier input in the modulator not exist in reality?
Why does the carrier input in the modulator not exist in reality?
What parameter of the carrier signal is modified in Phase Shift Keying to represent data?
What parameter of the carrier signal is modified in Phase Shift Keying to represent data?
What does Full Duplex communication mean?
What does Full Duplex communication mean?
Why are ASK, FSK, and Phase Shift Keying techniques used in communication systems?
Why are ASK, FSK, and Phase Shift Keying techniques used in communication systems?
