Linguistic scientists from the Universities of Victoria and Alberta (Canada) have developed a methodology for teaching the ancient languages of Indigenous Indians using ultrasound. It is necessary in order to visualize and show on the screen how the tongue, teeth and other parts of the speech apparatus should be located for the pronunciation of specific sounds. It is extremely difficult to convey this information in words, so the teaching of ancient dialects in the 21st century actually stopped.
The current generation of those, in whose veins the blood of the Indians of the North-West of Canada flows, does not know the languages of their ancestors at all, they no longer had the opportunity to study them. More precisely, words and phrases are known to everyone, but repeating specific sounds that are not in English is an extremely difficult task for modern Canadians. At the same time, the whole essence, richness and meaning of languages such as "chalcomel" and its dialect "hulkuminum" (Hul'q'umi'num ') is precisely in the exact reproduction of the ancient sound. For the descendants of the Indians, this is a tribute to their ancestors.
All existing speakers of these languages are very old people, they can communicate, but not teach young people. Therefore, Dr. Clayston Baker and Professor Sonia Bird studied the work of the speech apparatus of the carriers of hulkuminum and made a three-dimensional model of his behavior during conversation. They used a simple and safe ultrasound scanner to “illuminate” the speaker's larynx. Now, by looking at their image and comparing it to the reference diagram, students are trained to give the throat and tongue the right shape for pronouncing the complex sounds of the ancient language.