A fast microprogrammed digital filter supporting early signal processing research

Olli Simula*, Yrjö Neuvo

*Corresponding author for this work

Research output: Chapter in Book/Report/Conference proceedingConference contributionScientificpeer-review

Abstract

In the 1970s research and teaching of digital signal processing was started in several universities in Scandinavia. Special emphasis in the research was on digital filter structures implementable on emerging digital hardware. On the theoretical side, the development of computationally efficient, low-sensitivity digital filter structures was widely investigated. Realization of these novel transfer functions was also important in order to verify the efficiency of the filters in practice. The latest commercial microprocessors indicated that real time signal processing covering the audio range of signals was becoming realistic. A microprogrammable digital signal processor based on high speed bit-sliced architecture was designed at Helsinki University of Technology. With this hardware, the performance of computationally efficient, low-sensitivity digital filter structures was tested. Algorithm research with emphasis on implementation aspects had a great impact on the readiness of Finnish electronics and telecommunications industry to start using programmable digital hardware. Early DSP applications in telecommunications industry were released already in late 1970s. Ten years later, when the first GSM phones were under development, Finnish industry was on the leading edge of applying digital signal processors in a number of applications.

Original languageEnglish
Title of host publicationHistory of Nordic Computing 4 - 4th IFIP WG 9.7 Conference, HiNC4, Revised Selected Papers
EditorsChristian Gram, Per Rasmussen, Sören Duus Östergaard
Pages367-378
Number of pages12
ISBN (Electronic)978-3-319-17145-6
DOIs
Publication statusPublished - 2015
MoE publication typeA4 Article in a conference publication
EventIFIP WG 9.7 Working Conference on History of Nordic Computing - Copenhagen, Denmark
Duration: 13 Aug 201415 Aug 2014
Conference number: 4

Publication series

NameIFIP Advances in Information and Communication Technology
Volume447
ISSN (Print)18684238

Conference

ConferenceIFIP WG 9.7 Working Conference on History of Nordic Computing
Abbreviated titleHiNC
CountryDenmark
CityCopenhagen
Period13/08/201415/08/2014

Keywords

  • Bit-sliced architecture
  • Computational efficiency
  • Digital filters
  • Digital signal processors
  • Low-sensitivity realizations
  • Microprogramming

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