Music and Computers

Changing the Amplitude of a Sound

Let's hear what it sounds like to change the amplitude of a sound.
We will play a noise signal and display the signal on the oscilloscope. The oscilloscope plots the amplitude of the signal versus time. To change the amplitude of a signal in the computer we simply multiply the signal by a number.
To Do:

Move the amplitude fader back and forth.
Notice the effect on the sound.
Notice that signal in the oscilloscope gets larger and smaller.