In this video 5 chapters
Lisp SOS 1: types of lisp and what the tongue should be doing
The four kinds of lisp, what the tongue is doing in each, and where it should sit for a clear S sound.
Transcript
0:01 Hello, it’s Lisp SOS video number one. I’m going to talk to you about the four different kinds of lisp, in which the tongue is doing something different, but something dysfunctional, each time.
0:15 The first kind is a frontal lisp, or an interdental lisp, where the tongue physically slips between the teeth. That can be a tiny amount, or really quite pronounced. Type number two is a palatal lisp. It sounds almost like a cross between an S and a SH sound.
0:41 Type number three is a lateral lisp, where air escapes over the sides of the tongue and out of the sides of the mouth. That can sound quite slushy, and is usually the most obvious kind. The fourth kind is less obvious: a dentalised lisp, where the tip of the tongue touches the teeth, often the bottom teeth.
1:17 Each one of these lisps comes with its own potential functional issues, based on where the tongue is and what it is doing for a lot of the time. It usually tells us more about what could be going on with that person’s eating, posture and sleep.
1:41 For an S sound, the tongue should reach up and touch the palate in this spot, with a pointed tongue. I’ll talk more about that, and other things the tongue should be able to do, in Lisp SOS video number two.