HS 471 NOISE POLLUTION Chapter 13
HS 471 NOISE POLLUTION Chapter 13. NOISE. Noise = unwanted sound Characteristics: Frequency (pitch), Hz Amplitude (intensity, loudness), dB Human hearing ability: 20 - 20,000 Hz Maximum sensitivity: 1,000 – 5,000 Hz A- weighting Human speech: 500 – 2,000 Hz. Noise Definitions.
367 views • 12 slides