Fall semester 2005
Nordic Graduate School of Language Technology
Graduate School of Language
Technology
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Each
student should carry out an acoustic investigation of their own voice. This
exercise will make the student familiar with speech analysis and the basic
structure of speech sounds. The results should be summarised and discussed by
all students.
The
analysis can be done with the help of the WaveSurfer
software. It can be downloaded from http://www.speech.kth.se/software/ - wavesurfer.
Make an
analysis of your own vowel system. Record the different vowels using test words
within a carrier sentence such as: “I said testword
again.”
Measure duration and formant frequencies for long and short vowels. Make a table with the measured
values. Make a vowel chart using the first two formants plotting F1 on the
x-axes and F2 on the y-axes. Compare the formant values for stressed and unstressed
positions for all vowels.
Study the
realisation of all consonants according to place and manner of articulation. Do
this in the context of one vowel.
Study how
one consonant varies in the context of several different vowels, different consonants
and consonant clusters.
If the
above is too simple for you, choose a specific question to study, such as the
different realizations of /r/ or how the acoustic effects of rounding spread to
adjacent segments in spontaneous speech.
Acoustic
and Auditory Phonetics, Keith Johnson, ISBN# 0-631-20094-0 (a second edition is
also available)
Teacher
David House davidh@speech.kth.se
http://www.speech.kth.se/~davidh