Simplify the following text for a Grade 10 native English-speaking person.
Original: Though a WAV file can hold compressed audio , the most common WAV format contains uncompressed audio in the linear pulse code modulation ( LPCM ) format .
Simplified: It is the main format used on Windows systems for raw and typically uncompressed audio . The default bitstream encoding is the Microsoft Pulse Code Modulation ( LPCM ) format .