HOME APPLIANCES NOISE CONTROL

Jute-based composites can be used in the noise control of several home appliances like window air-conditioner, refrigerator, clothes washer and dryer, vacuum cleaner, dishwasher, etc. In many instances noise reduction of around 10 dB has been ob­tained by using the jute derivatives. In few other instances the noise reduction in terms of SPL has been hardly achieved, however there has been a significant im­provement in the sound quality of the sound after the noise treatment. For instance a metallic tonal noise has been suppressed to a pleasant broadband noise. In fact cur­rently noise control engineers are designing products with superior sound quality58. Case studies of noise control from few of them are given in the following sections.