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Delta Modulation Video Lecture | Electrical Engineering Optional Notes for UPSC

FAQs on Delta Modulation Video Lecture - Electrical Engineering Optional Notes for UPSC

1. What is Delta Modulation and how does it work?

Ans.Delta Modulation is a method of encoding analog signals into digital form. It works by approximating the analog signal with a series of steps or delta changes, where each sample is compared to the previous one. If the current sample is higher than the previous sample, a '1' is recorded; if it is lower, a '0' is recorded. This method simplifies the encoding process and reduces the amount of data needed for transmission.

2. What are the advantages of using Delta Modulation over other modulation techniques?

Ans.Delta Modulation offers several advantages including simpler implementation and reduced bandwidth requirements compared to traditional modulation techniques like Pulse Code Modulation (PCM). It also requires less complex circuitry, making it cost-effective. Additionally, Delta Modulation can provide better performance in scenarios with low signal-to-noise ratios.

3. What are the limitations of Delta Modulation?

Ans.While Delta Modulation has its benefits, it also has limitations. It can suffer from slope overload distortion if the signal changes rapidly, leading to inaccuracies in signal representation. Additionally, it is sensitive to quantization errors, which can result in a loss of fidelity in the reconstructed signal. This makes it less suitable for high-frequency signals.

4. In what applications is Delta Modulation commonly used?

Ans.Delta Modulation is commonly used in voice transmission and digital communication systems where bandwidth efficiency is crucial. It is often implemented in low-bitrate audio codecs, as well as in certain telecommunication systems. Its simplicity also makes it useful in embedded systems and applications requiring low-power consumption.

5. How does Delta Modulation compare to Pulse Code Modulation (PCM)?

Ans.Delta Modulation and Pulse Code Modulation (PCM) are both techniques for encoding analog signals, but they differ significantly. PCM encodes the amplitude of the signal at each sample point, resulting in higher fidelity and better quality. In contrast, Delta Modulation encodes the difference between samples, which can lead to simpler circuitry but at the cost of signal quality. PCM typically requires more bandwidth than Delta Modulation, making it less efficient for low-bitrate applications.

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Sep 06, 2025 Last updated

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Video Description: Delta Modulation for UPSC 2025 is part of Electrical Engineering Optional Notes for UPSC preparation. The notes and questions for Delta Modulation have been prepared according to the UPSC exam syllabus. Information about Delta Modulation covers all important topics for UPSC 2025 Exam. Find important definitions, questions, notes, meanings, examples, exercises and tests below for Delta Modulation.

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Here you can find the meaning of Delta Modulation defined & explained in the simplest way possible. Besides explaining types of Delta Modulation theory, EduRev gives you an ample number of questions to practice Delta Modulation tests, examples and also practice UPSC tests.

	Electrical Engineering Optional Notes for UPSC 576 videos\|646 docs\|366 tests

Electrical Engineering Optional Notes for UPSC

576 videos|646 docs|366 tests

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