Lab 5. Sound Wave

Introduction

This experiment designed to examine the properties of sound wave. 

Procedure

1. 

Labpro and microphone setup

2. One person say "AAAAAAAAA" -> collect data (graph will appear automatically)

3. Another person say "AAAAAAAA" -> collect data (also, graph will appear)

4. Collect data for a tuning fork by striking it on a soft object. (normal)

5. Collect another set of data for a tuning fork for a sound that is not as loud as #4.

Data

Graph #1

Graph #2

Graph #3

Graph #4

Discussion

C) blinking eye

Increase the sample 10 times long

Conclusion

It was difficult to get a steady wave curve by using human voice. As shown on our graph #1 and #2, the amplitude kept changing. However, the graph created by human voice are a periodic curve which same patterns of peaks were repeated periodically.