Audacity A1

Audio file formats: 
There are different audio file formats for storing audio on a computer.

• WAV format is widely used on Windows and is needed for creating an audio CD. 
• AIFF is widely used on Apple's operating systems. 
• Compressed formats are used on portable music players..

Waveform:

Visual representation of an audio signal.

Wav: 

 container format, almost always used for lossless, uncompressed, PCM audio.