Exam Question Checklist

Exam 1997 Question 3

"Describe an experiment that might be used to investigate the hypothesis that the use of fundamental frequency by a speaker varies between formal and informal settings. Ensure your answer includes: subject selection, recording environment, recording equipment, signal analysis and interpretation of results."

20 things you should mention:

• Subject selection
  • naive - don't know what expt is about
  • homogeneous
  • no pathology
  • need number of speakers to take average
• Recording environment
  • recording in different social settings
  • e.g. over coffee
  • e.g. public lecture
  • record enough speech/select material
• Recording equipment
  • use Lx
  • don't need top quality audio
  • electrode placement
• Analysis
  • Use PCLX to get distributions
  • Dx1/Dx2
  • Look for range - how
  • look for mode - how
  • look for regularity - how
• Interpretation
  • repeated measures
  • test shift in mode/range/regularity
  • t-test matched samples
  • changes in use of intonation patterns?