Automatically Recognising European Portuguese Children’s Speech

Pronunciation Patterns Revealed by an Analysis of ASR Errors
  • Annika Hämäläinen
  • Hyongsil Cho
  • Sara Candeias
  • Thomas Pellegrini
  • Alberto Abad
  • Michael Tjalve
  • Isabel Trancoso
  • Miguel Sales Dias
Part of the Lecture Notes in Computer Science book series (LNCS, volume 8775)


This paper reports findings from an analysis of errors made by an automatic speech recogniser trained and tested with 3-10-year-old European Portuguese children’s speech. We expected and were able to identify frequent pronunciation error patterns in the children’s speech. Furthermore, we were able to correlate some of these pronunciation error patterns and automatic speech recognition errors. The findings reported in this paper are of phonetic interest but will also be useful for improving the performance of automatic speech recognisers aimed at children representing the target population of the study.


Automatic speech recognition children’s speech error analysis European Portuguese fricatives pronunciation vowel formants 


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Copyright information

© Springer International Publishing Switzerland 2014

Authors and Affiliations

  • Annika Hämäläinen
    • 1
    • 2
  • Hyongsil Cho
    • 1
    • 2
  • Sara Candeias
    • 1
    • 3
  • Thomas Pellegrini
    • 4
  • Alberto Abad
    • 5
  • Michael Tjalve
    • 7
  • Isabel Trancoso
    • 5
    • 6
  • Miguel Sales Dias
    • 1
    • 2
  1. 1.Microsoft Language Development CenterLisbonPortugal
  2. 2.ISCTE - University Institute of LisbonLisbonPortugal
  3. 3.Instituto de Telecomunicações-pole of CoimbraCoimbraPortugal
  4. 4.IRIT - Université Toulouse III - Paul SabatierToulouseFrance
  5. 5.INESC-ID LisboaLisbonPortugal
  6. 6.Instituto Superio TécnicoLisbonPortugal
  7. 7.Microsoft & University of WashingtonSeattleUSA

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