A low-frequency sound produced by mechanical devices often serves as a crossword puzzle clue. Examples include the hum of a refrigerator, the whir of a fan, or the drone of an engine. These sounds, characterized by their deep, resonant quality, can be subtle or prominent depending on the machinery involved.
The use of such auditory clues in word puzzles highlights the pervasiveness of these sounds in everyday life. They form a part of the ambient soundscape, often unnoticed until brought to the forefront, as in a crossword. This type of clue encourages solvers to consider the sonic world around them, connecting abstract wordplay with tangible experiences. Historically, crossword puzzles have incorporated a variety of clue types, engaging solvers with different forms of knowledge and perception, including auditory cues. These clues contribute to the puzzle’s challenge and richness.
