1. Microprocessor Presentation Md. Enamul Haque Id: 13101261

2. HEARING AIDS Md. Enamul Haque 13101261

3. Hearing Aids

4. A small device that we wear in or behind our ear Two types of hearing aids a) Analogue b) Digital

5. Hearing Aids 3 basic parts: (a) microphone (b) amplifier (c) speaker  Microphone receives sounds  Amplifier amplifies the sound waves  Speaker acts as receiver to the ear

6. Analogue Hearing Aid Big Processes all kind of noises No enhanced directional perception

8. Advantages of Digital Hearing Aid Follows algorithm which can differentiate background noise and speech Having noise filter Fine tune Automatic change to surrounding change

9. More flexible and adjustable for specific user Enhanced directional perception Improved conversational comprehension

10. Disadvantages High price Not suitable for all deaf people High maintenance