Pronunciation LabEnglish pronunciation
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Guided practice · General American English

English Sound Laboratory

Canonical initial /ʃ/ versus /tʃ/ control

Contrast canonical initial /ʃ/ with /tʃ/ while keeping the following rhyme stable.

PracticeGuided practiceRecord and listen at every stage
Practise with trustworthy examples. Reviewed audio is used where it is available. On other items, you can still record, listen back and retry. Pronunciation feedback appears only where this lab has a reviewed feedback check.

See · compare · continuous friction for /ʃ/, stop-plus-friction for /tʃ/

Sustain /ʃ/; build and release /tʃ/

Both consonants use a postalveolar constriction. /ʃ/ is continuous voiceless friction, while /tʃ/ begins with a complete closure and releases into similar friction. Keep the following vowel and final consonants stable.

Voiceless postalveolar fricative/ʃ/
Schematic target articulation. It is not a measurement of the learner's mouth.
Place
postalveolar
Manner
fricative
Tongue tip
—
Airflow
continuous oral
Voice
voiceless
Voiceless postalveolar affricate/tʃ/
Schematic target articulation. It is not a measurement of the learner's mouth.
Place
postalveolar
Manner
affricate
Tongue tip
—
Airflow
affricated oral
Voice
voiceless
What you are hearing: these short clips come from the reviewed sentence at the end of this lab. Use them as context examples for the sound.