In the phonetic alphabet this is how CH is written
Today on my FB page I had someone post a question about the CH sound….and I thought following our conversation via FB that I would post some specifics about this challenging sound. Now the CH sound is not the latest developing sound in English…but we do give children up until seven years of age to master this sound.
The CH sound has two components even though it is produced with a single impulse of breath. The two components of the CH sound includes the T sound and the SH sound. And as you see above the CH sound written phonetically looks like this: tʃ
What I find so interesting is the sound that contrasts to the CH sound….and how amazing (even though complicated) English is……now the sound that contrasts with CH is the J sound (as in jump and juice)…..however phonetically J is written like this: dʒ.
Now the dʒ sound has two components as well….the J sound is made up of the D sound and the sound you hear in measure and treasure and vision…..phonetically that sound looks like this: ʒ. So when you put both sounds together you get: dʒ
The pretty cool thing about English to me is this…..the CH sound is made up of two sounds…both are voiceless…which means that your vocal folds do not move…do not vibrate…and as I tell children….it is a motor off sound. So the two components of the CH sound: T and SH are both voiceless sounds.
However….CH’s sound contrast: the dʒ sound is made up of two components as we talked about above…however, these two components the d sound and the ʒ sounds are both voiced….vocal folds moving….motor on sounds.
and what is even cooler is that BOTH sounds are made in the same place in the mouth….the only difference is that when you make one sound (dʒ ) your vocal folds move….and for the other sound (tʃ) your vocal folds do not move (hence the motor on and motor off)…..
So often times when I see children that have difficulty with the CH sound…they may also have difficulty with the J sound….pretty cool…and interesting…despite the complexity of English.