+1 862 207 3288 LING 139 PHONETICS
ACOUSTIC MEASUREMENTS OF SPEECH SOUNDS
What to do after you’ve decided which group of speech sounds to analyze:
1. Make sure you know what you are supposed to analyze acoustically.
2. That means: find a set of acoustic characteristics/features relevant to the
specific group of sounds chosen, and know what and how to measure these
features in Praat.
3. Choose several words for the measurements. Why? The more measurements
you have for one phenomenon, the more likely your measurements are close to
being accurate.
4. Presenting numerical values in whatever unit of measurement (seconds,
milliseconds, Hertz, decibels) is a must. Use tables to present your
measurements.
Possible acoustic analyses, depending on the group of speech sounds:
Group of sounds Acoustic characteristics Acoustic analysis
Vowels: Vowel quality Formant frequencies to – First formant
measure height and _ Second formant
back/front
Duration of vowels
Vowels: Tones Differences in frequencies – Pitch frequency at vowel
of pitch mid-point, if there is no
pitch movement
Pitch frequency at the
beginning, the peak,
and/or the end, if rising or
high falling, etc.
Vowels: Vowel length Acoustic duration; vowel Duration, from the
quality, if relevant beginning to the end of
the vowels
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