You can generate Ambient Sound for studying, etc, using free White, Ambient & Background Noise Generator software & tools for Windows PC.

Every sound in LabChirp is generated through wave calculations. Three waves—the main wave, frequency modulation, and volume modulation—play unique roles in creating sound.

Carrier Wave Generator ... The audio signal causes the radio speaker's diaphragm to vibrate, which creates sound waves. A sound wave equivalent to the singer's voice radiates from the speaker.