Howtosignalprocessing
- What are the issues in delta modulation?
- What is the solution of the problems in delta modulation?
- How can we overcome limitations of delta modulation?
- What are 2 different types of errors in delta modulation?
What are the issues in delta modulation?
The presented technique has two drawbacks, including slope overload distortion and granular noise. These two important disadvantages are owing to the fixed step size in the Delta Modulation method. The slope overload distortion happens when the signal changes rapidly and the slop is high.
What is the solution of the problems in delta modulation?
The solution to this problem is to make the step size small. Important Point: Therefore, a large step size is required to accommodate a wide dynamic range of the input signal (to reduce slope overload distortion), and small steps are required to reduce granular noise.
How can we overcome limitations of delta modulation?
To reduce this error, the step size must be increased when slope of signal x(t) is high. Since the step size of delta modulator remains fixed, its maximum or minimum slopes occur along straight lines.
What are 2 different types of errors in delta modulation?
Quantizing noise in delta modulation systems falls into two categories, granular noise and slope overload noise. Granular noise exists because the decoded output signal can assume only a specified number of levels in the range of interest.
