You're confusing white noise with independent audio cues.
Plus, I don't think anybody ignores keyboard typing sounds. They work just like car engine noises. Audio feedback for a physical action. The example you're searching for is keypad tones for smartphones. That's the concept behind your idea.
Plus, I don't think anybody ignores keyboard typing sounds. They work just like car engine noises. Audio feedback for a physical action. The example you're searching for is keypad tones for smartphones. That's the concept behind your idea.