A technique called "Contagious Humming" can be used to quiet a room for announcements or to reduce ambient noise. The method involves a group starting to hum, which then spreads through the crowd, naturally causing conversations to cease. This approach is presented as a calmer alternative to shouting or clapping, aiming to create a more focused environment. AI
RANK_REASON The article describes a social technique for managing group noise levels, not a technological advancement or significant industry event.
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