This is a wearable audio amplifier that can be used as a hearing aid without inserting an ear piece in to ear, but wearing closer to 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