This is a wearable audio amplifier suitable for personal listening for people with hearing deficiency. Instead of placing the ear piece inside ears this device provide speakers with soft realistic sound close to the ears.

1. Wearable Audio Amplifier as a hearing
aide
Designer: Leelananda Jayasuriya
E- mail : leel6391@yahoo.com
Web : www.ljindustries.com/wearable.htm

2. Introduction
• Due to environmental noise and disturbances sometimes we
cannot hear properly when someone talking to us or giving an
important speech
• When a person is delivering a speech, sometimes we will be
not able to hear it with natural ability of the ear.
• People with hearing deficiency also require some device to
boost the sound for them to hear properly
• There are instances we need to hear the sound from a distant
place
• Idea of this project is to introduce a new device that will be
capable of boosting sound coming towards the listener

3. Background Art
• At present there are listening devices built to
amplify sound and be able to hear with a
head phone or ear piece for personal
listening.

4. Objectives
• Introducing a wearable device capable of
boosting the sound coming in to listener for
personal listening replacing the head phone
of an ear piece.
• There are health Issues of side effects using
Headphones and Earphones. A high quality
sound generating device with a speaker
device for listener’s personal hearing this
problem is avoided.
• This device is a wearable audio amplifier that
can be attached to listener's’ dress or
attached to body.

5. • The following details are a device operating
with above mentioned features
• This Audio amplifier built around IC LM386,
condense microphone and speaker and built
in a casing operating with 9 volt battery power
and attached to specially designed jacket
wearable for people

7. Procedure of implementing the project
Step 1
• Selecting an audio IC and design a low power
high sensitive audio amplifier.
• Using OrCAD software to simulate the circuit
• Build the circuit on bead board
• Build the circuit on Universal PCB Printed
Circuit Board
• Design the circuit using Eagle CAD software

8. Procedure of implementing
Step 2
• Get a print of the circuit in .pdf format
• Transfer the circuit to a copper coated vinyl
sheet using sticker paper
• Assembly of the components on the circuit
board
• Testing the circuit
• Placing the electronic assembly in casing
• Placing everything in a wearable jacket

9. OrCAD Simulation

10. Circuit Assembly for testing

11. Printed circuit board

12. The assembly of the hearing Aide

13. Complete assembly with a wearing
jacket

14. The End