| Defines the basic functioning and working goals of hearing aids. |
| Performs the Real Ear Measurement method when applying a hearing aid. |
| Describes hearing aid apparatus. |
| Describes the current approaches in hearing aids. |
| Defines bone conduction hearing aids and CROS system features. |
| Describes hearing aid adjustment features. |
| Describes the characteristics of amplification and auxiliary devices. |
| Describes ear mold properties. |
| Performs special measurement and evaluation methods of amplification systems. |
| Defines the indication of assistive listening devices. |