8 Best Ear Protection for High-Frequency Noise
Work Gearz
JUNE 13, 2021
Most noise from industrial or construction worksites can be measured within the range of human hearing and specifically between 20 and 20,000 Hertz. Some machinery, however, may produce sounds in the extreme upper limits such as a high-frequency piercing sound from an ultrasonic welder. Check on Amazon. Other Competitive Choices.
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