Sound can only travel if there is a medium to transport it, such as air, water, glass, or metal. If you stand in an empty room with a speaker playing music, you will hear the music. However, if the air from this room is removed, the speaker will still function, but you won’t hear any sound as there’s no medium to transport the sound waves.
You may hear external sound when using Noise Cancelling due to:
- • Air trapped between your audio device and eardrum.
- • Different pitch levels. Noise cancelling works best when the ambient noise is low or medium in pitch and remains constant. For example, an airplane engine produces a low-pitched, constant sound, meaning that the level of sound you hear remains consistent. Conversely, when someone speaks, sound waves scatter based on the volume and energy created by every word. Unlike a plane engine, speaking pitch changes frequently. That is why you might hear someone talking next to you.
Read the article to learn how to improve noise cancellation.
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