Chapter 5b Finite word length effect

Chapter 5b Finite word length effect - Finite Word Length...

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Unformatted text preview: Finite Word Length Effect. DSP System in Practice The filter H(z) actual practical performance may differ from its simulated result. This implemented filter structure and the word length used in the DSP processor have impacts on its performance. Finite word-length problem DSP algorithm is frequently simulated using computer software that use floating point numbers with very high precision (e.g 64 bits ,double precision) However, most DSP processor can only store data using finite word length e.g 8 bits, 16 bits In practice, numbers (signals/coefficients) can be represented only to a finite precision, and arithmetic operations are subject to errors (e.g data overflow) This contributes to finite word length effects as follow Quantization of filter coefficients Quantization & overflow in arithmetic operations Quantization Quantization is the process of converting from continuous analog values to a finite number of discrete values....
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This note was uploaded on 08/27/2009 for the course FET etm taught by Professor Hi during the Spring '09 term at Multimedia University, Cyberjaya.

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Chapter 5b Finite word length effect - Finite Word Length...

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