Physiological effects This form of environmental degradation has implication for health as serious as air or water pollution. Noise can change mens physiological state by speeding up pulse and respiratory rates. It can impair hearing either or temporarily, millions of permanently industrial workers are threatened with hearing damage. Medical evidence suggests that noise can cause heart attacks. Noise can cause chronic effects as hypertension or ulcers. Noise can cause deafness. Some empirical research conducted on pregnant female mice reveals that air craft taking off which bring 120 to 160 dB caused miscarriages in them, if the findings on mice are made applicable on human being. The effect of these categories includes, annoyance, tensions in muscles, nervous irritability and strain. It creates annoyance to the receptors due to sound level fluctuations The aperiodic sound due to its irregular occurrences causes displeasure to hearing and causes annoyance. The physiological features like breathing amplitude, blood pressure, heart-beat rate, pulse rate, blood cholesterol are affected.