Table 2 Equipment list which was used in this project

1

Precordial Stethoscope Chest Pieces

2

Latex Rubber Tubing

3

Mini Electret

Nexxtech Ultra-Miniature Tie-Clip

Microphone

Microphone Model 3303013

4

Sound Level Calibrator, 94dB

Model 407744

5

Commercial Audio Amplifier with volume adjustment and meter

6

ECG Bio Amplifer UFI

Model 2122i

7

USB Audio Interface

EDIROL Model UA-1EX