Quantization

Error analysis for uniform quantization of uniform input

Error analysis for uniform quantization of uniform input
  1. What is quantization error analysis?
  2. How do you measure quantization error?
  3. What is input quantization error?
  4. What are the errors that arise due to quantization of numbers?

What is quantization error analysis?

Answer : Quantization error is the difference between the analog signal and the closest available digital value at each sampling instant from the A/D converter. Quantization error also introduces noise, called quantization noise, to the sample signal.

How do you measure quantization error?

This error is called quantization error (Vq) and can be calculated by subtracting the ADC input (Vin) from the output of the DAC (Vout) as shown in Figure 3 below.

What is input quantization error?

Input quantization error

 The conversion of continuous-time input signal into digital value produces an error which is known as. input quantization error.  This error arises due to the representation of the input signal by a fixed number of digits in A/D. conversion process.

What are the errors that arise due to quantization of numbers?

Quantization errors in digital filters can be classified as: Round-off errors derived from internal signals that are quantized before or after more down additions; Deviations in the filter response due to finite word length representation of multiplier coefficients; and.

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