ABSTRACT

Undesirable sound in the 20 Hz to 20 000 Hz (20 kHz) range is called noise. Noise may be constant or may vary in duration, frequency, or magnitude. Kryter (1970) and Price et al. (1989) provide convincing evidence of the debilitating effects of noise on humans. Noise impairs human performance, and high levels cause temporary hearing impairment or permanent hearing loss. Therefore, noise is a Human Factors engineering consideration.