Fifth floor. Any sound that interferes with people's rest, study and work and the sound that people want to hear, that is, unnecessary sound, are collectively called noise. Because of the operation of the machine tool, the noise generated by the garment factory is relatively large, which can penetrate the three-story house, so the noise of the garment factory on the second floor can be transmitted to the fifth floor. Clothing factory has 120 sets of modern clothing (weaving) manufacturing equipment, including high-speed sewing machines, three to five-line sewing machines, cutting machines, large dehumidifying ironing tables and other equipment. Special machines include round-headed buttonhole sewing machine, flat-headed buttonhole sewing machine, high-speed electronic looping machine, sewing machine, double-needle sewing machine and computer automatic sleeve sewing machine.