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Give Ideas to create hearing instruments to fix hearing problems in space, as you know sound waves can’t travel through empty space.
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Give Ideas to create hearing instruments to fix hearing problems in space, as you know sound waves can’t travel through empty space.

User Kratz
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hearing test provides an evaluation of the sensitivity of a person's sense of hearing and is most often performed by an audiologist using an audiometer. An audiometer is used to determine a person's hearing sensitivity at different frequencies.
User Ferdinand Gaspar
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