While you don’t really need to know any of the technical stuff related to your child’s hearing loss in order to help him learn to talk, there is occasionally some technical information that can help you really appreciate the lessons and understand the techniques better. The Technical School section of the EVDC website gives you an overview of some of the topics that are too technical to include in the main part of the website.

Firstly, don’t worry if you don’t understand everything that is presented under this section! It is enough if it gives you some familiarity with the concepts.
Secondly, if you find something interesting but can’t understand fully, use the Forum to discuss it with other parents.
Don’t underestimate the power of working together and helping each other!


The Technical School topics listed below are not all available yet. They will be added as time and resources become available. Keep checking back often. Meanwhile, use the Forum to ask any question you may have. Thank you for your patience!

TS 01: Audiogram

TS 02: Hearing Aids

TS 03: Cochlear Implant

TS 04: Modes of Communication

TS 05: Keywords and Critical Elements

TS 06: Auditory Discrimination and Feedback

TS 07: Closed Sets and Open Sets

TS 08: Listening Sounds List

TS 09: Age for Acquisition of Speech Sounds
(imports an external web page:

The contents of this web page are available in Danish