Loudness 

Amplitude using Audacity
 

Now we will use a tool to "see" sound on the computer screen. There are several buttons at the top left corner of the tool. We are going to use the "record" and "stop" button in the tool. Keep the microphone close to the source of sound. 

Suppose you choose to snap your fingers. Now press the "record" button. Snap your fingers gently and then snap the hard. Click on the " stop" button.

You will see that the louder sound has a bigger wiggle and the lower sound has a smaller wiggle.
You can say that the louder sound has higher amplitude than the lower sound.

To open the Audacity, use the following directions:
1. Go to Start (windows icon)
2. Type Audacity in search tab
3. From the result shown, click on Audacity

Here is a tutorial video to know how to use Audacity.

Video 2.1 (a): Audacity

Now choose the sounds that you want to “see”. For e.g. you can clap your hands or hit the table or say “aaa” - change the volume of the sound and observe the amplitude of higher and lower volume. You can also look at the wiggle for the sound made by your design in section 1.4.

Changing volume means you are changing amplitude.​

Take a screenshot of the wiggle of your recorded sound sample on Audacity and upload the image in gallery on platform.

To take a screenshot press, 'windows' button+PrtScr button. Image will be saved in Pictures (in "screenshots" folder)

To save your recorded sound sample (audio file), first create a new folder of your name or your group's name on Desktop. For this-
Go to Desktop-->right click-->click on New-->click on Folder-->type the name that you want to give your folder.

Now follow the directions given below:
1. Go to the File tab
2. Click on the option- Save Project As
3. You will get a warning. Select ok
4. Save in-Desktop
5. Select the folder that you created on Desktop
6. File name- Type your file name
You need to give different name for each file.
For example- aud1, aud2 etc.                                                                                                                                                                                                                                                 Image 2.1 : Audacity Icon    
To open the saved file, use the following directions:
1. Close Audacity Software (click on x sign on the top right corner)
2. Go to Desktop
3. Click on the folder that you created, select the file (with Audacity icon) that you want to play.