Fast Measurements of Quantization Distortions in DSP Algorithms

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3 Citations (Scopus)

Abstract

A measurement technique is proposed to characterize the nonidealities of digital signal processing algorithms which are induced by quantization effects, overflows (fixed point), or nonlinear distortions in one single experiment/simulation. The main idea is to apply specially designed multisine excitations in order to discriminate between the output of the ideal system and the contributions of the systems's nonidealities. This approach allows the comparison and quantification of the quality of different implementation alternatives. Applications of this method include but are not limited to, digital filters, fast Fourier transforms, and audio codecs.
Original languageEnglish
Pages (from-to)1917-1923
Number of pages7
JournalIEEE Transactions on Instrumentation and Measurement
Volume56
Publication statusPublished - 1 Oct 2007

Keywords

  • Digital arithmetic
  • digital filters
  • digital filter wordlength effects
  • digital signal processors
  • nonlinear distortion
  • quantization
  • signal design
  • signal processing

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