Whispering works by forcing air through the throat without making the vocal folds vibrate.

The longer version

Air is forced through a narrowed passage without the folds being drawn into regular vibration, so the flow becomes turbulent rather than periodic. Turbulence produces a hiss with energy spread across many rates at once, which is why no clear pitch can be heard.

The mouth cavity still shapes that noise, and formant-like peaks survive, so listeners can often tell who is speaking and catch many vowel cues. Because there is no strong fundamental, a whisper carries poorly in noise and lacks the projection of a voiced call. Voiced speech puts most energy into a few low partials, which travel farther.

Where this entry sits

Sound and Music gathers facts about how vibrations move through air and water, how ears turn them into meaning, and how instruments and notation shape what listeners hear. Expect echoes, pitch, volume, acoustics, and the odd silence in between. The full list sits on the Sound and Music page, where every entry is listed in order.