Chapter 20. Instrumental Analysis of Resonance in Speech Impairment

  1. Martin J. Ball Head Past President3,
  2. Dr. Michael R. Perkins Professor founder member Vice-President4,
  3. Dr. Nicole Müller3 and
  4. Sara Howard Senior Lecturer speech-language therapist pathologist President4
  1. Tara L. Whitehill Associate Professor Director1 and
  2. Alice S.-Y. Lee2

Published Online: 6 MAR 2009

DOI: 10.1002/9781444301007.ch20

The Handbook of Clinical Linguistics

The Handbook of Clinical Linguistics

How to Cite

Whitehill, T. L. and Lee, A. S.-Y. (2008) Instrumental Analysis of Resonance in Speech Impairment, in The Handbook of Clinical Linguistics (eds M. J. Ball, M. R. Perkins, N. Müller and S. Howard), Blackwell Publishing Ltd., Oxford, UK. doi: 10.1002/9781444301007.ch20

Editor Information

  1. 3

    University of Louisiana, Lafayette, USA

  2. 4

    Department of Human Communication Sciences, University of Sheffield, UK

Author Information

  1. 1

    University of Hong Kong, Hong Kong

  2. 2

    Department of Speech and Hearing Sciences, University College, Cork, Ireland

Publication History

  1. Published Online: 6 MAR 2009
  2. Published Print: 28 MAR 2008

ISBN Information

Print ISBN: 9781405135221

Online ISBN: 9781444301007



  • resonance and resonance disorders;
  • instrumentation for evaluating velopharyngeal dysfunction;
  • nasometer - providing data on acoustic results of velopharyngeal function;
  • spectrography and acoustic analysis of nasalization;
  • pressure-flow technique for assessing individuals with VPD of anatomical defects;
  • aerodynamic measures - objective and noninvasive


This chapter contains sections titled:

  • Resonance and Resonance Disorders

  • Instrumentation for Evaluating Velopharyngeal Dysfunction

  • Conclusions

  • References